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Basic BackBone.js MCQ

1. Which options will allow you to auto-bind a BackboneJs view to existing element(s)?

$(".same-class").each(function(index,ele){ var v=new MyView(); $(ele).html(v.$el); });

$(".same-class").each(function(index,ele){ var v=new MyView({el:$(ele)}); });

var myView = Backbone.View.extend({ el: '.class-name', events: { 'hover .button' : 'test' }, test: function() { console.log('hi'); } });

All of the above

Answer

Correct Answer: $(".same-class").each(function(index,ele){ var v=new MyView(); $(ele).html(v.$el); });
$(".same-class").each(function(index,ele){ var v=new MyView({el:$(ele)}); });

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2.
Which of the following events executed when the model validation failed?

isValid

invalid

validation

validationError

Answer

Correct Answer: invalid

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3.
To tell an object to stop listening to events. Either call stopListening with no arguments to have the object remove all of its registered callbacks ... or be more precise by telling it to remove just the events it's listening to on a specific object, or a specific event, or just a specific callback? (choose all that apply)

view.stopListening(model);

view.stopListening();

view.stopListening(event);

All of the above

Answer

Correct Answer: view.stopListening(model);
view.stopListening();

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4.
Which code is correct to create a template in Backbone.js?

Answer

Correct Answer: <script type="text/template" id="website-list-template"> <table> <thead> <tr> <th>Name</th> <th>Aboutme</th> <th>Portfolio</th> </tr> </thead> <tbody> <% _.each(pages, function(web) { %> <tr> <td><%= web.get('name') %></td> <td><%= web.get('aboutme') %></td> <td><%= web.get('portfolio') %></td> </tr> <% }); %> </tbody> </table> </script>

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5.
Which of the following are built-in events in Backbone?

map

every

sort

each

Answer

Correct Answer: sort

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6.
Using the following code example how can you use fetch with sending id?

var Type = Backbone.Model.extend({ url : "/api/SomeRoute" });

var Type = Backbone.Model.extend({ urlRoot : "/api/SomeRoute" });

Both of the above

None of the above

Answer

Correct Answer: var Type = Backbone.Model.extend({ urlRoot : "/api/SomeRoute" });

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7.
Which of the following are Backbone Building Blocks? (choose all that apply)

Collection

Hash

Router

State

Answer

Correct Answer: Collection
Router

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8.
Which code is used when model or collection is synced successfully with server?

"change:[attribute]"(model, value, options)

"destroy"(model, collection, options)

"request"(model_or_collection, xhr, options)

"sync"(model_or_collection, resp, options)

Answer

Correct Answer: "sync"(model_or_collection, resp, options)

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9.
How do you we get only the first 20 items in a backbone collection?

collection.first(20)

first(collection, 20)

first.collection(20)

All of the above

Answer

Correct Answer: collection.first(20)

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10.
Which of the following route parameter's statement is correct of Router? (choose all that apply) router.route(fun, name, [callback])

fun: May be routing function or regular expression

callback: Name of the router, if callback argument is omitted

None of the above

Answer

Correct Answer: name: Name of the router parameter
callback: Name of the router, if callback argument is omitted

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11.
Which of the following code will you use if Defining a root route?

App.Route = Backbone.Router.extend({ route: { '': 'index' }, index: function(){ $(document.body).append("root index route"); } });

App.Router = Backbone.Router.extend({ routes: { '': 'index' }, index: function(){ $(document.body).append("root index route"); } });

App.Router = Backbone.Route.extend({ route: { '': 'index' }, index: function(){ $(document.body).append("root index route"); } });

All of the above

Answer

Correct Answer: App.Router = Backbone.Router.extend({ routes: { '': 'index' }, index: function(){ $(document.body).append("root index route"); } });

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12.
In Backbone, ____ provide a way for you to connect URLs (either hash fragments, or real) to parts of your application. Any piece of your application that you want to be bookmarkable, shareable, and back-button-able needs an URL.

routers

trigger

events

templates

Answer

Correct Answer: routers

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13.
What is Backbone.sync used for?

When Backbone wants to save or read a model to the server it calls out a function called as Backbone.sync.

When Backbone wants to save or read a view to the server it calls out a function called as Backbone.sync.

When Backbone wants to save or read a event to the server it calls out a function called as Backbone.sync.

All of the above

Answer

Correct Answer: When Backbone wants to save or read a model to the server it calls out a function called as Backbone.sync.

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14.
__ removes all of the view's delegated events. It is useful if you want to disable or remove a view from the DOM temporarily?

undelegateEvents

delegateEvents

removeview

events

Answer

Correct Answer: undelegateEvents

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15.
How can you retrieve a set of model from the server and set them to the collection when they arrive?

collection.remove()

collection.get()

collection.add()

collection.fetch()

Answer

Correct Answer: collection.fetch()

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16.
To create a Collection class of your own, extend Backbone.Collection, providing instance properties, as well as optional classProperties to be attached directly to the collection's constructor function?

model

extend

hasChanged

Answer

Correct Answer: extend

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17.
In Backbonejs, how can you change templates of a view on the fly?

@company_location= new window.ArtistLocationForm({templates: JST["template/new_company_location"]})

render: function(){ var templateFn = this.option.template || this.template; this.$el.html(templateFn(this.model.attributes)); return this; }

render: function(){ var templateFn = this.options.template || this.template; this.$el.html(templateFn(this.model.attributes)); return this; }

@company_location= new window.ArtistLocationForm({template: JST["templates/new_company_location"]})

Answer

Correct Answer: render: function(){ var templateFn = this.options.template || this.template; this.$el.html(templateFn(this.model.attributes)); return this; }

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18.
Which models can be created by extending Backbone?

var Todo = Backbone.Model.extend({}); var todo1 = new Todo(); console.log(JSON.stringify(todo11)); var todo = new Todo({ title: 'Check the attributes of both model instances in the console.', completed: true }); console.log(JSON.stringify(todo2));

var Todo = Backbone.Model.extend({}); var todo1 = new Todo(); console.log(JSON.stringify(todo1)); var todo2 = new Todo({ title: 'Check the attributes of both model instances in the console.', completed: true }); console.log(JSON.stringify(todo2));

All of the above

Answer

Correct Answer: var Todo = Backbone.Model.extend({}); var todo1 = new Todo(); console.log(JSON.stringify(todo1)); var todo2 = new Todo({ title: 'Check the attributes of both model instances in the console.', completed: true }); console.log(JSON.stringify(todo2));

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19.
Which of the following are Backbone Model object functions?

omit

key

pick

value

Answer

Correct Answer: omit

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20.
The sync method is called with the following parameters? (choose all that apply)

Method

Model

Options

None of the above

Answer

Correct Answer: Method
Model
Options

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21.
You can limit number of models in Collection using the following code?

var myCollection = new Collection(); myCollection.url = this.model.url() + '/slient'; myCollection.fetch();

var myCollection = new Collection(); myCollection.url = this.model.url() + '/feed'; myCollection.fetch();

var myCollection = Backbone.Collection.extend({ parse: function(response) { return response.slice(0,20); } });

All of the above

Answer

Correct Answer: var myCollection = Backbone.Collection.extend({ parse: function(response) { return response.slice(0,20); } });

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22.
How does Backbone decide if it should use POST/GET/ Request to the Server and what are the methods Backbone has Reserved for these Operations?

If we instantiate a model with an id, Backbone.js will automatically perform a GET request to the urlRoot + ‘/id’ using fetch() method. (conforming to RESTful conventions)

If the id attribute of the model is null, Backbone.js will send a POST request to the urlRoot of the server using save() method.

If the id attribute of the model is not null, Backbone.js will send a PUT request instead of a POST request using save() method.

If a model has an id we know that it exists on the server, so if we wish to remove it from the server we can call destroy() method. destroy will fire off a DELETE /user/id (conforming to RESTful conventions).

All of the above

Answer

Correct Answer: All of the above

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23.
Which of the following configuration options are available in Backbone.js

InitialCopyDirection

modelSetOptions

boundAttribute

suppressThrows

All of the above

Answer

Correct Answer: All of the above

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24.
Thorax provides an extended event _____ to simplify binding of common events from models and collections?

Hash

Listener

Key

Dispatch

Answer

Correct Answer: Hash

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25.
This method is called internally within the router, whenever a route matches and its corresponding callback is about to be executed. Return __ from execute to cancel the current transition. Override it to perform custom parsing or wrapping of your routes.

true

false

Answer

Correct Answer: false

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26.
Trigger callbacks for the given event, or space-delimited list of events. Subsequent arguments to ___ will be passed along to the event callbacks?

trigger

once

listenTo

stopListening

Answer

Correct Answer: trigger

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27.
Which of the following Collection methods is an equivalent to instantiating a model with a hash of attributes?

create

new

init

initiate

Answer

Correct Answer: create

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28.
BackboneJS test with jasmine if parameters are passed to fetch?

describe("People collection" function() { var people = Backbone.Collection.extend({ }); function searchPeople(people, data ) { people.fetch(data); } it("must verify the fetch parameters!", function(){ var param = {data : {gender : 'male'}}; spyOn(people, 'fetch').andReturn(); // Warning: this makes the call synchronous, Fetch actually won't go through! searchPeople(people, param); expect(people.fetch).toHaveBeenCalled(); expect(people.fetch).toHaveBeenCalledWith(param); }); });

var myCollection = new Collection(); myCollection.url = this.model.url() + '/feed'; myCollection.fetch();

All of the above

Answer

Correct Answer: describe("People collection" function() { var people = Backbone.Collection.extend({ }); function searchPeople(people, data ) { people.fetch(data); } it("must verify the fetch parameters!", function(){ var param = {data : {gender : 'male'}}; spyOn(people, 'fetch').andReturn(); // Warning: this makes the call synchronous, Fetch actually won't go through! searchPeople(people, param); expect(people.fetch).toHaveBeenCalled(); expect(people.fetch).toHaveBeenCalledWith(param); }); });

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29.
Which of the following code is Backbone.Events interface is by default mixed into other Back‐ bone components?

_.extend(View.prototype, Events, ( ... ));.

_.extend(View.prototype, Events, { ... });.

_.extend(View.prototype, Event, { ... });.

extend(View.prototype, Events, { ... });.

Answer

Correct Answer: _.extend(View.prototype, Events, { ... });.

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30.
Rather than adding or removing models individually, you might want to update an entire collection at once. ___ takes an array of models and performs the necessary add, remove, and change operations required to update the collection?

idAttribute

.attributes

Collection.set()

Collection.add()

Answer

Correct Answer: Collection.set()

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31.
Is it possible to subscribe on event when backbonejs view is removed from DOM?

Yes

Answer

Correct Answer: Yes

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32.
In Backbone, ____ provide a way for you to connect URLs (either hash fragments, or real) to parts of your application. Any piece of your application that you want to be bookmarkable, shareable, and back-button-able needs a URL?

routers

trigger

events

templates

Answer

Correct Answer: routers

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33.
Views are based on ____ templates that provide layouts for rendering?

Model

View

Controller

Collection

Answer

Correct Answer: View

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34.
Which of the following code is True about Template Function Call?

template class T> class calc { public: T el; calc(T t); }; template class T> calc T>::calc(T t) { el = t; } double the_sum(calc int> &a, calc double> &b) { return a.el + b.el; }

template <class t> class calc { public: T el; calc(T t); ............. }; template<class t> calc<t>::calc(T t){el=t;}

Both of the above

None of the above

Answer

Correct Answer: template class T> class calc { public: T el; calc(T t); }; template class T> calc T>::calc(T t) { el = t; } double the_sum(calc int> &a, calc double> &b) { return a.el + b.el; }

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35.
Which of the following tags are using to specify templates?

<% %/>

<% %>

<%></%>

<%= %>

Answer

Correct Answer: <% %>

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36.
How can a set of model retrieved from the server and set them to the collection when they arrive?

collection.remove()

collection.get()

collection.add()

collection.fetch()

Answer

Correct Answer: collection.fetch()

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37.
Which of the following events is activates when the requesting to the server failed?

fail

error

catch

finally

Answer

Correct Answer: error

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38.
How Backbone Decides if it Should Use POST/GET/ Request to the Server and What are the Methods Backbone has Reserved for these Operations?

If we instantiate a model with an id, Backbone.js will automatically perform a GET request to the urlRoot + ‘/id’ using fetch() method. (conforming to RESTful conventions)

If the id attribute of the model is null, Backbone.js will send a POST request to the urlRoot of the server using save() method.

If the id attribute of the model is not null, Backbone.js will send a PUT request instead of a POST request using save() method.

All of the above

Answer

Correct Answer: All of the above

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39.
How to limit number of models in Collection using the following code?

var myCollection = new Collection(); myCollection.url = this.model.url() + '/slient'; myCollection.fetch();

var myCollection = new Collection(); myCollection.url = this.model.url() + '/feed'; myCollection.fetch();

var myCollection = Backbone.Collection.extend({ parse: function(response) { return response.slice(0,20); } });

All of the above

Answer

Correct Answer: var myCollection = Backbone.Collection.extend({ parse: function(response) { return response.slice(0,20); } });

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40.
Models expose an __ attribute which represents an internal hash containing the state of that model. This is generally in the form of a JSON object similar to the model data you might find on the server but can take other forms?

.attributes

.change

.silent

.console

Answer

Correct Answer: .attributes

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41.
Which of the following is Backbone Model object functions?

omit

key

pick

value

Answer

Correct Answer: omit
pick

Note: This question has more than 1 correct answers

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42.
Sync:Manages actual persistence by a function that Backbone calls every time it attempts to read or save a __ to the server?

Data

Model

Event

View

Answer

Correct Answer: Model

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43.
Models can be created by extending Backbone.Model which of the following?

var Todo = Backbone.Model.extend({}); var todo1 = new Todo(); console.log(JSON.stringify(todo11)); var todo2 = new Todo({ title: 'Check the attributes of both model instances in the console.', completed: true }); console.log(JSON.stringify(todo2));

All of the above

Answer

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44.
Which of the following styles of variables is using Backbone in routers?

:params

*splats

#hashes

All of the above

Answer

Correct Answer: :params

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45.
BackboneJS fetch collection based on parameters using the following code?

Genres.Collection = Backbone.Collection.extend({ url: function() { return 'path to my json'; }, initialize: function(opts) { opts = opts || {}; this.genre = opts.genre || 'rock'; }, parse: function(response){ return response.data.genres[this.genre]; } });

Genres.Collection = Backbone.Collection.extend({ url: function() { return 'path to my json'; }, parse: function(response, genre){ return response.data.genres[genre]; // when I do: return response.data.genres.rock; // I get all artists from the genre "rock". // but I want the response to be based on the variable "genre" } });

Both of the above

None

Answer

Correct Answer: Genres.Collection = Backbone.Collection.extend({ url: function() { return 'path to my json'; }, initialize: function(opts) { opts = opts || {}; this.genre = opts.genre || 'rock'; }, parse: function(response){ return response.data.genres[this.genre]; } });

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46.
Unbinding function, is used to remove the validation binding on the model and removing all events hooked up on the?

Collection

Model

Router

State

Answer

Correct Answer: Collection

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47.
Which of the following events are exists in Backbone Events System?

add

sync

invalid

All of the above

Answer

Correct Answer: All of the above

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48.
Which of the following dependency must be added for Backbone.js setup?

script src=".../jquery.min.js"> /script>

script src=".../angular.min.js"></script>

script src =".../underscore-min.js" ></script>

script src=".../bootstrap.min.js"></script>

Answer

Correct Answer: script src =".../underscore-min.js" ></script>

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49.
Backbone offers an opt-in for HTML5 pushState support?

Backbone .history.push State

Backbone.window.push State

window.history.push State

Backbone.pushState State

Answer

Correct Answer: window.history.push State

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50.
In Backbone.js, modelbinder class is used to make synchronization process of and together?

Views, models

Controller, views

Models, controller

State, models

Answer

Correct Answer: Views, models

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51.
Suppose what are the typical problems you might face with the Backbone view code?

Application models don’t change very often

Application pages are frequently refreshed from scratch from the server

Between different view models are not shared

All of the above

Answer

Correct Answer: All of the above

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52.
The default sync handler maps CRUD to REST?

create => POST /collection

read => GET /collection[/id]

update => PUT /collection/id

All of the above

Answer

Correct Answer: All of the above

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53.
What are the default Backbone.Sync handlers?

create,update,delete, read

create, update, patch, delete, read

create, update, trigger, delete, read

create, update, delete, get

Answer

Correct Answer: create, update, patch, delete, read

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54.
Backbone.sync, transforms the and operations into HTTP requests?

Fetch(), save()

Load(), save()

Send(), save()

Read(), save()

Answer

Correct Answer: Fetch(), save()

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55.
____ gives a direct reference to the attributes and you should be careful when playing with it. Best practice would suggest that you use .set() to edit attributes of a model to take advantage of backbone listeners?

obj.attributes

.attributes

.silent

All of the above

Answer

Correct Answer: obj.attributes

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56.
Backbone.sync is a _____ to synchronize your collections and models across the systems?

Call

Method

Testing

Event

Answer

Correct Answer: Method

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57.
The architecture of Backbone.js contains the following modules?

HTTP Request

Router

Events

Collection DB

Data Provider

Answer

Correct Answer: HTTP Request
Router
Events

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58.
Which of the following method is enables History API?

Backbone.history.create();

Backbone.history.init();

Backbone.history.enable();

Backbone.history.start();

Answer

Correct Answer: Backbone.history.start();

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59.
Underscore is primarily used for its utility __ and json2.js?

Functions

Templates

Methods

Routers

Answer

Correct Answer: Methods

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60.
You can remove all listeners on a particular object by using?

Instance_id.remove();

Instance_id.destroy();

Instance_id.off();

Instance_id.nulls();

Answer

Correct Answer: Instance_id.off();

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61.
In Backbone.JS how do you pass two models to view while creating object of a view using the following code?

var clientModel = new ClientModel(); var allClientModel = new AllClientModel(); var clientView = new ClientView({model:clientModel});

var Passingmodel = new Backbone.Model(); var clientModel = new ClientModel(); var allClientModel = new AllClientModel(); Passingmodel .set({contacts: clientModel , users: allClientModel }); var clientView = new ClientView({model: Passingmodel });

var Passingmodel = new Backbone.Model(); var clientModel = new ClientModel(); var allClientModel = new AllClientModel(); Passingsmodel .set({contacts: clientModel , users: allClientModel }); var clientView = new ClientView({model: Passingmodel });

All of the above

Answer

Correct Answer: var Passingmodel = new Backbone.Model(); var clientModel = new ClientModel(); var allClientModel = new AllClientModel(); Passingmodel .set({contacts: clientModel , users: allClientModel }); var clientView = new ClientView({model: Passingmodel });

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62.
Which of the following options can be passed directly to the View?

element

class

Answer

Correct Answer: el
id

Note: This question has more than 1 correct answers

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63.
In BackboneJS, It's possible to auto-bind BackboneJs view to existing element(s)?

$(".same-class").each(function(index,ele){ var v=new MyView(); $(ele).html(v.$el); });

$(".same-class").each(function(index,ele){ var v=new MyView({el:$(ele)}); });

var myView = Backbone.View.extend({ el: '.class-name', events: { 'hover .button' : 'test' }, test: function() { console.log('hi'); } });

All of the above

Answer

Correct Answer: $(".same-class").each(function(index,ele){ var v=new MyView(); $(ele).html(v.$el); });

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64.
How can you will use Underscore Templates in Backbone.js Views?

First, create an underscore template

Create div for el property of the view

Compile the template using underscore

Load the compiled HTML into Backbone “el”

All of the above

Answer

Correct Answer: All of the above

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65.
Create a view that will build it's own DOM element using the following code?

var myNewView = new LibraryView({model: thisBook, tagName: 'ul', className: 'libraryview', id: 'library', attributes: {'data-date': new Date()} }); console.log(myNewView.el);

var myNewView = new LibraryModel({view: thisBook, tagName: 'ul', className: 'libraryview', id: 'library', attributes: {'data-date': new Date()} }); console.log(myNewView.el);

var myNewView = new LibraryModel({view: thisBook, type: 'ul', className: 'libraryview', id: 'library', attributes: {'data-date': new Date()} }); console.log(myNewView.el);

All of the above

Answer

Correct Answer: var myNewView = new LibraryView({model: thisBook, tagName: 'ul', className: 'libraryview', id: 'library', attributes: {'data-date': new Date()} }); console.log(myNewView.el);

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66.
True or false: removes method removes listeners from the removed element.

True

False

Answer

Correct Answer: True

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67.
In BackboneJS, Read the following code and can you change templates of a view on the fly?

@company_location= new window.ArtistLocationForm({templates: JST["template/new_company_location"]})

render: function(){ var templateFn = this.option.template || this.template; this.$el.html(templateFn(this.model.attributes)); return this; }

render: function(){ var templateFn = this.options.template || this.template; this.$el.html(templateFn(this.model.attributes)); return this; }

@company_location= new window.ArtistLocationForm({template: JST["templates/new_company_location"]})

Answer

Correct Answer: render: function(){ var templateFn = this.options.template || this.template; this.$el.html(templateFn(this.model.attributes)); return this; }

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68.
Which following statement is correct about attach Listeners to Events in a View?

Use the “events” attribute of Backbone.View. Remember that event listeners can only be attached to child elements of the “el” property.

Use the “models” attribute of Backbone.View. Remember that event listeners can only be attached to child elements of the “el” property.

Use the “routers” attribute of Backbone.View. Remember that event listeners can only be attached to child elements of the “el” property.

Use the “collections” attribute of Backbone.View. Remember that event listeners can only be attached to child elements of the “el” property.

Answer

Correct Answer: Use the “events” attribute of Backbone.View. Remember that event listeners can only be attached to child elements of the “el” property.

Note: This Question is unanswered, help us to find answer for this one

69.
A Backbone view to a different DOM element, use __, which will also create the cached $el reference and move the view's delegated events from the old element to the new one?

setElement

attributes

template

render

Answer

Correct Answer: setElement

Note: This Question is unanswered, help us to find answer for this one

70.
If {parse: __} is passed as an option, the attributes will first be converted by parse before being set on the model.

true

false

Answer

Correct Answer: true

Note: This Question is unanswered, help us to find answer for this one

71.
Which method can be used to create a deep copy of the object?

duplicate

copy

clone

replicate

Answer

Correct Answer: replicate

Note: This Question is unanswered, help us to find answer for this one

72.
Which code creates a template in Backbone.js?

Answer

Note: This Question is unanswered, help us to find answer for this one

73.
How can the default sync handler map CRUD to REST?

create => POST /collection

read => GET /collection[/id]

update => PUT /collection/id

All of the above

Answer

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

74.
Which of the following iteration functions exist in Backbone Collections?

first

middle

last

All of these.

Answer

Correct Answer: last

Note: This Question is unanswered, help us to find answer for this one

75.
Which method can be used to create own Model?

new

extend

model

defaults

Answer

Correct Answer: extend

Note: This Question is unanswered, help us to find answer for this one

76.
How can a Backbone Model be created? Check all that apply.

var Todo = Backbone.Model.set({});

var Todo = Backbone.Model.create({});

var Todo = Backbone.Model.init({});

var Todo = Backbone.Model.extend({});

Answer

Correct Answer: var Todo = Backbone.Model.set({});
var Todo = Backbone.Model.extend({});

Note: This question has more than 1 correct answers

Note: This Question is unanswered, help us to find answer for this one

77.
Which of the following tags are used to specify templates?

<% %/>

<% %>

<%></%>

<%= %>

Answer

Correct Answer: <% %>

Note: This Question is unanswered, help us to find answer for this one

78.
Which method can be used to remove Models associations ?

clear

associate

reset

Non of the above

Answer

Correct Answer: clear

Note: This Question is unanswered, help us to find answer for this one

79.
Which code example can you use fetch with sending id?

var Type = Backbone.Model.extend({ url : "/api/SomeRoute" });

var Type = Backbone.Model.extend({ urlRoot : "/api/SomeRoute" });

Both of the above

None of the above

Answer

Correct Answer: var Type = Backbone.Model.extend({ urlRoot : "/api/SomeRoute" });

Note: This Question is unanswered, help us to find answer for this one

80.
How can a set of models be retrieved from the server and into the collection when they arrive?

collection.retrive()

collection.get()

collection.getJSON(url)

collection.fetch()

Answer

Correct Answer: collection.retrive()

Note: This Question is unanswered, help us to find answer for this one

81.
According to the code below, how can a model be removed from a collection and server? var myCollection = new MyCollection(); ... var myModel = myCollection.get(2); ...

myCollection.remove(myModel)

myCollection.delete(myModel)

myCollection.destroy(myModel)

myModel.destroy()

Answer

Correct Answer: myCollection.destroy(myModel)

Note: This Question is unanswered, help us to find answer for this one

82.
Which code is True about Backbone.Collection?

var doItem1 = new TodoItem(); var doItem2 = new TodoItem(); var doList = [doItem1, doItem2];

var doItem1 = new TodoItem(); var doItem2 = new TodoItem(); var doList = [(doItem1, doItem2)];

var TodoList = Backbone.Collection.extend({ model: TodoItem }); var todoList = new TodoList();

var TodoList = Backbone.Collection.extend({ model: TodoItem }); var todoList = TodoList();

Answer

Correct Answer: var TodoList = Backbone.Collection.extend({ model: TodoItem }); var todoList = new TodoList();

Note: This Question is unanswered, help us to find answer for this one

83.
Which method can be used for updating URL?

locationPath

location.href

navigate

pathname

Answer

Correct Answer: navigate

Note: This Question is unanswered, help us to find answer for this one

84.
Which styles of variables are using Backbone in routers?

:params

*splats

#hashes

All of the above

Answer

Correct Answer: :params
*splats

Note: This question has more than 1 correct answers

Note: This Question is unanswered, help us to find answer for this one

85.
Which code will you use when Defining a root route?

App.Route = Backbone.Router.extend({ route: { '': 'index' }, index: function(){ $(document.body).append("root index route"); } });

App.Router = Backbone.Router.extend({ routes: { '': 'index' }, index: function(){ $(document.body).append("root index route"); } });

All of the above

Answer

Correct Answer: App.Router = Backbone.Router.extend({ routes: { '': 'index' }, index: function(){ $(document.body).append("root index route"); } });
App.Router = Backbone.Router.extend({ routes: { '': 'index' }, index: function(){ $(document.body).append("root index route"); } });

Note: This question has more than 1 correct answers

Note: This Question is unanswered, help us to find answer for this one

86.
Backbone offers an opt-in for HTML5 pushState support. Which one of the following is correct?

Backbone .history.push State

Backbone.window.push State

window.history.push State

Backbone.pushState State

Answer

Correct Answer: window.history.push State

Note: This Question is unanswered, help us to find answer for this one

87.
Which of the following events is executed when the model validation fails?

isValid

invalid

validation

validationError

Answer

Correct Answer: invalid

Note: This Question is unanswered, help us to find answer for this one

88.
How can an event be binded to an object?

object.on(event, callback)

object.trigger(event,callback)

object.listen(event,callback)

object.addListener(event,callback)

Answer

Correct Answer: object.on(event, callback)

Note: This Question is unanswered, help us to find answer for this one

89.
What are the Events of Backbone JS? (choose all that apply)

var myModel = Backbone.Model.extend({ defaults : { title : ‘title’, description : ’description, owner : ‘anonymous’, date : ‘no date supplied’ } });

var object = {}; _.extend(object, Backbone.Events); object.on("fire ", function() { alert("Ouch, you just kick me"); }); object.trigger("fire");

var object = {}; _.extend(object, Backbone.Events); object.on("alert", function(msg) { alert("Trigger " + msg); }); object.trigger("alert", "event");

None of the above

Answer

Correct Answer: var myModel = Backbone.Model.extend({ defaults : { title : ‘title’, description : ’description, owner : ‘anonymous’, date : ‘no date supplied’ } });
var object = {}; _.extend(object, Backbone.Events); object.on("fire ", function() { alert("Ouch, you just kick me"); }); object.trigger("fire");
var object = {}; _.extend(object, Backbone.Events); object.on("alert", function(msg) { alert("Trigger " + msg); }); object.trigger("alert", "event");

Note: This question has more than 1 correct answers

Note: This Question is unanswered, help us to find answer for this one

90.
Which option will tell an object to stop listening to events by either calling stopListening with no arguments to have the object remove all of its registered callbacks ... or by telling it to remove just the events it's listening to on a specific object, or a specific event, or just a specific callback? (choose all that apply)

view.stopListening(model);

view.stopListening();

view.stopListening(event);

All of the above

Answer

Correct Answer: view.stopListening(model);

Note: This Question is unanswered, help us to find answer for this one

91.
"This method removes callback functions or all events from an object." What option describes the above.

destroy

off

e.preventDefault

Answer

Correct Answer: destroy

Note: This Question is unanswered, help us to find answer for this one

92.
Which of the following is a built-in event in Backbone?

map

every

sort

each

Answer

Correct Answer: sort

Note: This Question is unanswered, help us to find answer for this one

93.
Which of the following events is activated when the request to the server fails?

fail

error

catch

finally

Answer

Correct Answer: error

Note: This Question is unanswered, help us to find answer for this one

94.
Which of the following libraries provide events for Backbone views? (choose all that apply)

Jquery

Angular

ZeptoJS

All of the above

Answer

Correct Answer: Jquery
ZeptoJS

Note: This question has more than 1 correct answers

Note: This Question is unanswered, help us to find answer for this one

95.
Which of the following attaches event listeners into the View?

var DocumentRow = Backbone.View....{ ... // listeners: { ... }, ... });

var DocumentRow = Backbone.View....{  ... // events: { ... }, ... });

Answer

Correct Answer: var DocumentRow = Backbone.View....{  ... // events: { ... }, ... });
var DocumentRow = Backbone.View....{  ... // events: { ... }, ... });
var DocumentRow = Backbone.View....{  ... // events: { ... }, ... });

Note: This question has more than 1 correct answers

Note: This Question is unanswered, help us to find answer for this one

96.
Which code gets index by Backbone.Collection? var Items = Backbone.Collection.extend({ model : Item, url : "/items" }); var items = new Items; items.fetch();

items.getindex(1);

items.get(0);

items.at(0);

items.index(1);

Answer

Correct Answer: items.at(0);

Note: This Question is unanswered, help us to find answer for this one

97.
Which statement is valid for setting initial values to the model attributes?

var MyModel = Backbone.Model....({ init : { "atribute1": "atribute2": } });

var MyModel = Backbone.Model....({ defaults: { "atribute1": "atribute2": } });

var MyModel = Backbone.Model....({ attributes : { "atribute1": "atribute2": } });

var MyModel = Backbone.Model....({ properties : { "atribute1": "value 1", "atribute2": "value 2", } });

Answer

Correct Answer: var MyModel = Backbone.Model....({ init : { "atribute1": "atribute2": } });

Note: This Question is unanswered, help us to find answer for this one

98.
Which code can you use for the deleteLists?

deleteList: function() { if (confirm(delete a list?')) { bTask.views.activeListMenuItem.model.destroy(); } return false; }

deleteList: function() { if (confirm(delete a list?')) { bTask.views.activeListMenuItem.model.removeAll(); } return false; }

deleteList: function() { if (confirm(delete a list?')) { bTask.models.activeListMenuItem.model.destroy(); } return false; }

All of the above

Answer

Correct Answer: deleteList: function() { if (confirm(delete a list?')) { bTask.views.activeListMenuItem.model.destroy(); } return false; }

Note: This Question is unanswered, help us to find answer for this one

99.

True or false: sync method invokes after successful connection with a server.

True

False

Answer

Correct Answer: True

Note: This Question is unanswered, help us to find answer for this one

100.

Using the following code example, How to use fetch with sending id?

var Type = Backbone.Model.extend({ url : "/api/SomeRoute" });

var Type = Backbone.Model.extend({ urlRoot : "/api/SomeRoute" });

Both of the above

None of the above

Answer

Correct Answer: Both of the above

Note: This Question is unanswered, help us to find answer for this one

101.

Which function is called when a Collection, Model is created?

initialize

set

init

create

Answer

Correct Answer: create

Note: This Question is unanswered, help us to find answer for this one

102.

Which of the following is not an Underscore utility function over Collections?

forEach

groupBy

length

size

Answer

Correct Answer: length

Note: This Question is unanswered, help us to find answer for this one

103.

Which of the following code is get index by Backbone.Collection? var Items = Backbone.Collection.extend({ model : Item, url : "/items" }); var items = new Items; items.fetch();

items.getindex(1);

items.get(0);

items.at(0);

items.index(1);

Answer

Correct Answer: items.get(0);

Note: This Question is unanswered, help us to find answer for this one

104.

True or false: The collections can`t nested another collection.

True

False

Answer

Correct Answer: True

Note: This Question is unanswered, help us to find answer for this one

105.

Which of the following types can be used in templates?

JSON

String

Number

All of the above

Answer

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

106.

Which of the following libraries can be used for defining Backbone template?

underscore

lodash

without library

Non of these.

Answer

Correct Answer: underscore

Note: This Question is unanswered, help us to find answer for this one

107.

True or false: el and $el are the same methods.

True

False

Answer

Correct Answer: True

Note: This Question is unanswered, help us to find answer for this one

108.

Which of the following iteration function are exists in Backbone Collections?

first

middle

last

All of these.

Answer

Correct Answer: first
last

Note: This question has more than 1 correct answers

Note: This Question is unanswered, help us to find answer for this one

109.

Which of the following will not continue and the attributes of the model will not be modified on the server?

.save()

.validate()

Both of the above

None of the above

Answer

Correct Answer: .save()

Note: This Question is unanswered, help us to find answer for this one

110.

Which of the following router methods is usually used while implementing login functionality?

init

auth

loggedIn

execute

Answer

Correct Answer: execute

Note: This Question is unanswered, help us to find answer for this one

111.

Which of the following methods can be called after all routers creation?

Backbone.history.start()

Backbone.history.start({pushState: true})

Backbone.history.start(true)

All of the above

Answer

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

112.

True or false: fetch method call the server and populates the collection.

True

False

Answer

Correct Answer: True

Note: This Question is unanswered, help us to find answer for this one

113.

Which of the following properties can be used for manipulating DOM element?

element

class

Answer

Correct Answer: el

Note: This Question is unanswered, help us to find answer for this one

114.

Which of the following template engines can be used with Backbone views?

EJS

Jade

Handlebars

All of the above

Answer

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

115.

Which of the following libraries provides events for Backbone views?

Jquery

Angular

ZeptoJS

All of the above

Answer

Correct Answer: ZeptoJS

Note: This Question is unanswered, help us to find answer for this one

116.

Which of the following syntax is valid in events for Backbone views?

“event css-selector”: “function”

“event element-id: “function”

“event”: “function id”

All of the above

Answer

Correct Answer: “event css-selector”: “function”

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117.

True or false: $ is always available in Backbone applications?

True

False

Answer

Correct Answer: True

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118. Which of the following two Options are the Backbone.Model events?

sort

error

All

Change

Answer

Correct Answer: Change

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119. In relation to JSHint check eqeqeq. all the equality operations are carried out using which of the following options?

El I==

LI 2.-

[1 2:

[LI l=

Answer

Correct Answer: LI 2.-

Note: This Question is unanswered, help us to find answer for this one

120. Which two of the following options are the ItemView Life-Cycle Event callbacks?

onBeforeltemAdded

onAfterltemAdded

onBeforeRender

onRender

Answer

Correct Answer: onBeforeltemAdded
onBeforeRender
onRender

Note: This question has more than 1 correct answers

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121. Which of the following functions are used by Thorax.Model for extending Backbone’s default model?

isEmpty

LayoutViewl)

html

isPopulated

Answer

Correct Answer: LayoutViewl)
isPopulated

Note: This question has more than 1 correct answers

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122. Which of the following options must be included to the user page before including backgridjs?

Backbone

Underscore

Perl

jQuery

Java

Answer

Correct Answer: Backbone

Note: This Question is unanswered, help us to find answer for this one

123. While using Handlebars with Backbone.js, which of the following options can be used for inserting comments into templates?

{{- comment -]}

{[l-- comment —.]]

{[l- comment -}]

Answer

Correct Answer: {{I comment }}
{{- comment -]}

Note: This question has more than 1 correct answers

Note: This Question is unanswered, help us to find answer for this one

124. Backbone memento is used for which of the following options?

For providing the ability to perform multiple undo or redo operations.

For keeping track of model changes.

For adding in notif‌ications for error.

For providing the binding support.

Answer

Correct Answer: For keeping track of model changes.

Note: This Question is unanswered, help us to find answer for this one

125. While using Handlebars with Backbonejs, which of the following Options is used for iterating through the collection?

for statement

#while expression

#each expression

while statement

Answer

Correct Answer: #each expression

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126. Backbone.js should be used under which of the following situations?

For adding or replacing DOM elements to the application.

For showing animation in an application.

For creating small web pages.

For making some requests.

Answer

Correct Answer: For adding or replacing DOM elements to the application.
For showing animation in an application.

Note: This question has more than 1 correct answers

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127. In relation to Thorax, which of the following options acts as a container for another View and also allows this contained view to be replaced easily?

CollectionView

LayoutView

Neither option a nor b.

Answer

Correct Answer: LayoutView

Note: This Question is unanswered, help us to find answer for this one

128.
While working with Backbonejs, which of the following options is the correct syntax of the function which is used for resetting the state of a model object to the same as it is on the server side? (Consider the variable is thisExample, the success message is Fetch is successful., and the error message is Fetch results in error.)

thisExample = fetch([

success: function(model, response){

console.log('Fetch is successful.');

error: function(model, response)[

console.log('Fetch results in error.');

l):

this.fetch.thisExampIe((

function success(model, response, options){

console.log('Fetch is successful.');

Function error(model, response, options){

console.log('Fetch results in error.');

I):

thisExample.fetch([

success: function(model, response, options){

console.log('Fetch is successful.');

error: function(model, response, options)[

console.log('Fetch results in error.‘):

}

I):

None of the above.

Answer

Correct Answer:

thisExample = fetch([

success: function(model, response){

console.log('Fetch is successful.');

error: function(model, response)[

console.log('Fetch results in error.');

l):

Note: This Question is unanswered, help us to find answer for this one

129. While installing Backbone.js. which of the following options is the only hard dependency that must be included?

Underscorejs

jQuery.js

json2.js

None of the above

Answer

Correct Answer: Underscorejs

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130. In a Backbonejs model, which of the following attributes is generated automatically by Backbone when the model is first created, and is used for identifying the model that has not been saved to the server and does not have its real ID available?

cid

idattribute

None of the above.

Answer

Correct Answer: cid

Note: This Question is unanswered, help us to find answer for this one

131.
Arrange the given steps of Test-Driven Development in the correct order?
i) Write production code
ii) Run test expecting failure
iii) Refactor code
iv) Write test
v) Repeat
vi) Run test suite

i), ii), iv), iii), vi), v)

iv). 1). 1w). mm

iv), ii). i). vi). iii). v)

i), vi), iii). ii). iv). v)

Answer

Correct Answer:

i), vi), iii). ii). iv). v)

Note: This Question is unanswered, help us to find answer for this one

132. Which of the following options helps in grouping of related models. handling the loading and saving of new models to the server and providing helper functions that performs aggregations or computations against a list of models?

Events

View

Collection

Router

Answer

Correct Answer: Collection

Note: This Question is unanswered, help us to find answer for this one

133.
After setting the back-end server, which of the following commands is used for setting the urlRoot attribute of the Backbone.js Model object? Consider that the url is http://localhostz8080lexamplesl,and the variable is Example.

Example.Backbone.Model.extend([

urlRoot=

Example = Model.extencl({

urlRoot: http://locaIhost:8080/examples/,

Example = Backbone.Model.extend({

urlRoot: 'httpzlllocalhostt8080/examplesl',

Example: Backbone.Model.extend([

urlRoot:

Answer

Correct Answer:

Example.Backbone.Model.extend([

urlRoot=

Note: This Question is unanswered, help us to find answer for this one

134. In relation to UglinyS task configuration options, which of the following Options is the default value of report option?

min

gzip

true

false

Answer

Correct Answer: true

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135. In relation to Grunt plugin QUint task configuration options, which of the following options is the default value of timeout option?

1.000 milliseconds

3.000 milliseconds

4.000 milliseconds

5.000 milliseconds

Answer

Correct Answer: 4.000 milliseconds

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136. Which of the following options is NOT a correct feature of Backbone.js?

Backbone.js is a library.

Backbone.js helps in organizing user's code.

Backbone.js can be used for creating mobile applications in well-structured manner.

In case of changes in model, the HTML of a Backbone.js applications remains unchanged.

Answer

Correct Answer: Backbone.js can be used for creating mobile applications in well-structured manner.

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137. Which of the following Backbone.js model methods is used for determining the previous value of the changed attribute?

previousAttributes

changedAttributes

isNew

Answer

Correct Answer: changedAttributes

Note: This Question is unanswered, help us to find answer for this one

138. Which of the following Backbone.js options is used for providing the ability to undo previous changes and triggering the events when there are unsaved changes?

Backbone.Notif‌ications

Backbone.trackit

Backbonestickit

None of the above.

Answer

Correct Answer: Backbone.trackit

Note: This Question is unanswered, help us to find answer for this one

139. In relation to Yeoman tool. which of the following options is a package manager for libraries and frameworks that are used within web applications?

NPM

Bower

Grunt

None Of the above.

Answer

Correct Answer: Bower

Note: This Question is unanswered, help us to find answer for this one

140.
In relation to templateSettingS parameter in Backbone.js. which of the following code snippets can be used for specifying the use of [{ ]) instead of <96 96>?

vartemplateExample =[

events.interpolate : /\[\[(.+?)\)\]/g

vartemplateExample =[

interpolate : A[\((.+?)\}\]lg

];

vartemplateExample =[

interpolate : V[\[(.+?)\}/]\g

vartemplateExample =[

eventinterpolate : ‘V[{(.+?)\}]/g'

];

Answer

Correct Answer:

vartemplateExample =[

interpolate : V[\[(.+?)\}/]\g

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141. In relation to the attribute changes in Backbonejs models, which of the following options is used to return true if an attribute has changed since the last change event?

previous()

hasChanged()

hasChanged.previous()

Changed()

Answer

Correct Answer: hasChanged()

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142. Which of the following Backbone.js functions is used for switching the DOM element that the view is applied to during the application Iifecycle?

render()

.setEIement()

$()

.ono

Answer

Correct Answer: .setEIement()

Note: This Question is unanswered, help us to find answer for this one

143. In relation to Jasmine matchers. which of the following matchers compares using the === function?

toEqual( value)

toMatch( regularExpression )

toBe( value)

toBeCloseTo( e, value )

Answer

Correct Answer: toBe( value)

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144. In relation to Grunt uglily task, which of the following options is the correct tag that is used for allowing conf‌iguration properties to be included in the task?

<%= %>

<$: $>

<@= @>

<&= &>

Answer

Correct Answer: <%= %>

Note: This Question is unanswered, help us to find answer for this one

145. In relation to Backbone.js. which of the following functions is NOT performed by a model?

Emitting events in case of data change.

Arranging data and business logic.

Loading and saving from the server.

Handling user input and listening to changes.

Answer

Correct Answer: Loading and saving from the server.

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146. In relation to Backbone UI, which of the following f‌iles that are contained in the source distribution of Backbone UI must be included to the HTML page?

backbone-ui.js

backbone-ui.css

Both Options a and b.

Neither option a nor b.

Answer

Correct Answer: Both Options a and b.

Note: This Question is unanswered, help us to find answer for this one

147. While using BackbonelocalStorage, which of the following options is used for def‌ining a new localStorage parameter for the collection?

localStorage : new libraryapp LocalStorage("MyLibrary").

LocalStorage localStorage : new("|ibraryappzMyLibrary").

localStorage : new Backbone.LocalStorage("libraryappzMyLibrary").

var localStorage : new Backbone.LocalStorage(MyLibrary),

Answer

Correct Answer: localStorage : new Backbone.LocalStorage("libraryappzMyLibrary").

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148. Which of the following Backbone.js options provides a local caching mechanism for the data so that if the app goes Offline, the data still continues to be stored and is synced with the server when connectivity is restored?

Backbone.duaIStorage

Backbone.localStorage

Both Options a and b.

Neither option a nor b.

Answer

Correct Answer: Backbone.localStorage

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149. In relation to File Array format. which of the following additional Grunt file properties when set to true. Is used for allowing the user to build the f‌ile object dynamically?

Filter

Dot

expand

nonuH

Answer

Correct Answer: Dot

Note: This Question is unanswered, help us to find answer for this one

150. Suppose you defined a new View named ExampIeView using Backbone.js. Which of the following commands is used for creating a new instance named myViewExample of this View?

myViewExampIe = new ExampleView();

var myViewExample =View ExampleView();

myViewExample = new View ExampleView();

var myViewExample = new ExampleView();

Answer

Correct Answer: myViewExampIe = new ExampleView();

Note: This Question is unanswered, help us to find answer for this one

151. While installing Backbone.js. which of the following options is required to be included for older internet explorer support?

Node.js

Angulanjs

json2.js

Underscore.js

Answer

Correct Answer: json2.js

Note: This Question is unanswered, help us to find answer for this one

152. in relation to Globbing patterns for f‌iles in Grunt, which of the following options is used for matching a single character but not I?

Answer

Correct Answer: *

Note: This Question is unanswered, help us to find answer for this one

153.
With regard to dealing with files in Grunt, which of the following Options is the correct property that is used to remove all path parts from the dest paths?
Note: The given options are the properties that can be used when expand = true.

ext

Flatten

cwd

dest

Answer

Correct Answer:

Flatten

Note: This Question is unanswered, help us to find answer for this one

154.
Which of the following modules are the parts of Backbone.js?
i) Events
ii) HTTPS Request
iii) Router
iv) HTTP Request

Only options i). ii) and iii).

Only options i). iii) and iv).

Only options ii), iii) and iv).

All options i). ii). iii) and iv).

Answer

Correct Answer:

All options i). ii). iii) and iv).

Note: This Question is unanswered, help us to find answer for this one

155.
Select if True or False.
Backbone.trackit cannot be applied to individual model objects, using the startTracking function.

True

False

Answer

Correct Answer:

False

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156. Which of the following options is used for setting a new set of events and handlers for the View and removing the previous events?

delegateEvents()

events

undelegateEvents()

setElement()

Answer

Correct Answer: delegateEvents()

Note: This Question is unanswered, help us to find answer for this one

157. Which of the following statements is/are NOT correct about the Backbone.js views?

Backbone.js View is used for specifying how to display from application.

Backbone.js View contains HTML markup for the application.

Backbone.js View presents model's data to the user.

Both the statements a and b are incorrect.

Answer

Correct Answer: Both the statements a and b are incorrect.

Note: This Question is unanswered, help us to find answer for this one

158.
While using Backbonejs, which of the following syntaxes is used for extending any basic objects with the Backbone event capability?

var object = {j;

_.extend(object. route. Backbone.Events);

var object = {};

_.extend(object, Backbone.Events);

var object = {};

_.extend(Backbone.Events);

var object = {};

_.extend(route. Backbone.Events);

Answer

Correct Answer:

var object = {};

_.extend(object, Backbone.Events);

Note: This Question is unanswered, help us to find answer for this one

159. In relation to Jasmine-jQuery matchers, which of the following arguments is passed to the toContain matcher that is used for checking the internals of an element for the presence of other elements?

name

string

jOuerySelector

className

Answer

Correct Answer: jOuerySelector

Note: This Question is unanswered, help us to find answer for this one

160. Which of the following Backbonejs collection methods is used for adding a model at the beginning of a collection?

collection.at(begin. model)

collection.get(id. model, [options])

collection.unshift(model. [options])

collection.push(model, [options])

Answer

Correct Answer: collection.unshift(model. [options])

Note: This Question is unanswered, help us to find answer for this one

161. Which of the following options is NOT a CollectionView Life-Cycle Event callback?

onBeforeltemAdded

onRender

onClose

onBeforeRender

Answer

Correct Answer: onClose

Note: This Question is unanswered, help us to find answer for this one

162. In relation to RequireJS configuration options, which of the following options is used for specifying an array of dependencies to load immediately after processing of the configuration of RequireJS?

map

shim

deps

conf‌ig

Answer

Correct Answer: deps

Note: This Question is unanswered, help us to find answer for this one

163. In relation to Jasmine-jOuery matchers. which of the following options is the correct syntax of the matcher that is used for checking if an event was triggered on the element?

toHaveBeenTriggered( event, handler)

toHaveBeenTriggered( name. event)

toHaveBeenTriggered( event)

toHaveBeenTriggeredO

Answer

Correct Answer: toHaveBeenTriggered( event, handler)

Note: This Question is unanswered, help us to find answer for this one

164.
Which of the following options is the correct OUnit callback that runs after each assertion and provides the result of the test case (either error or log) along with the message?

QUnitJog = function(results, message)[

];

QUnitJog = function(name, failure, results, message)[

};

QUnit.testDone = function(name, failures, message)[

QUnit.testDone = function(result, failures, message)[

];

Answer

Correct Answer:

QUnitJog = function(results, message)[

];

Note: This Question is unanswered, help us to find answer for this one

165. While using JavaScript, which of the following string functions is used for extracting a subString from the string that begins at the start position through the specif‌ied number of characters?

subString

substr

Split

trim

Answer

Correct Answer: subString

Note: This Question is unanswered, help us to find answer for this one

166. In relation to Backbone.ModeI, which of the following options is NOT a valid callback parameter of the request event?

model

xhr

value

options

Answer

Correct Answer: value

Note: This Question is unanswered, help us to find answer for this one

167. Which of the following options is the correct syntax of command that is used for installing the Grunt command-line interface globally?

npm install grunt -g -cli

npm install -g grunt-cli

npm install grunt-cli —g

npm install -g —cli-grunt

Answer

Correct Answer: npm install -g grunt-cli

Note: This Question is unanswered, help us to find answer for this one

168. Which of the following commands is used for installing the JavaScript tool. Yeoman?

npm install -g yeoman

npm install -g yo

npm install -g yeo

npm install -g y

Answer

Correct Answer: npm install -g yeoman

Note: This Question is unanswered, help us to find answer for this one

169.
In relation to RequireJS configuration options, which of the following is the correct option that is used for setting the baseUrl to point to the app directory?

require.config({

baseUrl:

require.config({

baseUrl=

require.config({

baseUrl

None of the above.

Answer

Correct Answer:

require.config({

baseUrl:

Note: This Question is unanswered, help us to find answer for this one

170.
In Backbonejs, which of the following Options is the correct syntax of creating 8 Fruit Object having default attributes name with value Mango, and season with value Summer are also added, and the message “Fruits are healthy!" is written to console?

Fruit = Backbone.Model.extend({

initialize.function()[

console.log(

Fruit = Backbone.Model.extend({

initialize: function0[

console.log('Fruits are healthy!‘);

defaults:{

season: 'Summer'

1):

Fruit = Backbone.Model.extend({

lunction:initialize0[

console.log('Fruits are healthy!');

defaults: [

season = 'Summer'

}

1):

None of the above.

Answer

Correct Answer:

Fruit = Backbone.Model.extend({

initialize.function()[

console.log(

Note: This Question is unanswered, help us to find answer for this one

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Basic BackBone.js MCQ

1. Which options will allow you to auto-bind a BackboneJs view to existing element(s)?

2. Which of the following events executed when the model validation failed?

4. Which code is correct to create a template in Backbone.js?

5. Which of the following are built-in events in Backbone?

6. Using the following code example how can you use fetch with sending id?

7. Which of the following are Backbone Building Blocks? (choose all that apply)

8. Which code is used when model or collection is synced successfully with server?

9. How do you we get only the first 20 items in a backbone collection?

10. Which of the following route parameter's statement is correct of Router? (choose all that apply) router.route(fun, name, [callback])

11. Which of the following code will you use if Defining a root route?

12. In Backbone, ____ provide a way for you to connect URLs (either hash fragments, or real) to parts of your application. Any piece of your application that you want to be bookmarkable, shareable, and back-button-able needs an URL.

13. What is Backbone.sync used for?

14. __ removes all of the view's delegated events. It is useful if you want to disable or remove a view from the DOM temporarily?

15. How can you retrieve a set of model from the server and set them to the collection when they arrive?

16. To create a Collection class of your own, extend Backbone.Collection, providing instance properties, as well as optional classProperties to be attached directly to the collection's constructor function?

17. In Backbonejs, how can you change templates of a view on the fly?

18. Which models can be created by extending Backbone?

19. Which of the following are Backbone Model object functions?

20. The sync method is called with the following parameters? (choose all that apply)

21. You can limit number of models in Collection using the following code?

22. How does Backbone decide if it should use POST/GET/ Request to the Server and what are the methods Backbone has Reserved for these Operations?

23. Which of the following configuration options are available in Backbone.js

24. Thorax provides an extended event _____ to simplify binding of common events from models and collections?

25. This method is called internally within the router, whenever a route matches and its corresponding callback is about to be executed. Return __ from execute to cancel the current transition. Override it to perform custom parsing or wrapping of your routes.

26. Trigger callbacks for the given event, or space-delimited list of events. Subsequent arguments to ___ will be passed along to the event callbacks?

27. Which of the following Collection methods is an equivalent to instantiating a model with a hash of attributes?

28. BackboneJS test with jasmine if parameters are passed to fetch?

29. Which of the following code is Backbone.Events interface is by default mixed into other Back‐ bone components?

30. Rather than adding or removing models individually, you might want to update an entire collection at once. ___ takes an array of models and performs the necessary add, remove, and change operations required to update the collection?

31. Is it possible to subscribe on event when backbonejs view is removed from DOM?

32. In Backbone, ____ provide a way for you to connect URLs (either hash fragments, or real) to parts of your application. Any piece of your application that you want to be bookmarkable, shareable, and back-button-able needs a URL?

33. Views are based on ____ templates that provide layouts for rendering?

34. Which of the following code is True about Template Function Call?

35. Which of the following tags are using to specify templates?

36. How can a set of model retrieved from the server and set them to the collection when they arrive?

37. Which of the following events is activates when the requesting to the server failed?

38. How Backbone Decides if it Should Use POST/GET/ Request to the Server and What are the Methods Backbone has Reserved for these Operations?

39. How to limit number of models in Collection using the following code?

40. Models expose an __ attribute which represents an internal hash containing the state of that model. This is generally in the form of a JSON object similar to the model data you might find on the server but can take other forms?

41. Which of the following is Backbone Model object functions?

42. Sync:Manages actual persistence by a function that Backbone calls every time it attempts to read or save a __ to the server?

43. Models can be created by extending Backbone.Model which of the following?

44. Which of the following styles of variables is using Backbone in routers?

45. BackboneJS fetch collection based on parameters using the following code?

46. Unbinding function, is used to remove the validation binding on the model and removing all events hooked up on the?

47. Which of the following events are exists in Backbone Events System?

48. Which of the following dependency must be added for Backbone.js setup?

49. Backbone offers an opt-in for HTML5 pushState support?

50. In Backbone.js, modelbinder class is used to make synchronization process of and together?

51. Suppose what are the typical problems you might face with the Backbone view code?

52. The default sync handler maps CRUD to REST?

53. What are the default Backbone.Sync handlers?

54. Backbone.sync, transforms the __ and __ operations into HTTP requests?

55. ____ gives a direct reference to the attributes and you should be careful when playing with it. Best practice would suggest that you use .set() to edit attributes of a model to take advantage of backbone listeners?

56. Backbone.sync is a _____ to synchronize your collections and models across the systems?

57. The architecture of Backbone.js contains the following modules?

58. Which of the following method is enables History API?

59. Underscore is primarily used for its utility __ and json2.js?

60. You can remove all listeners on a particular object by using?

61. In Backbone.JS how do you pass two models to view while creating object of a view using the following code?

62. Which of the following options can be passed directly to the View?

63. In BackboneJS, It's possible to auto-bind BackboneJs view to existing element(s)?

64. How can you will use Underscore Templates in Backbone.js Views?

65. Create a view that will build it's own DOM element using the following code?

66. True or false: removes method removes listeners from the removed element.

67. In BackboneJS, Read the following code and can you change templates of a view on the fly?

68. Which following statement is correct about attach Listeners to Events in a View?

69. A Backbone view to a different DOM element, use __, which will also create the cached $el reference and move the view's delegated events from the old element to the new one?

70. If {parse: __} is passed as an option, the attributes will first be converted by parse before being set on the model.

71. Which method can be used to create a deep copy of the object?

72. Which code creates a template in Backbone.js?

73. How can the default sync handler map CRUD to REST?

74. Which of the following iteration functions exist in Backbone Collections?

75. Which method can be used to create own Model?

76. How can a Backbone Model be created? Check all that apply.

77. Which of the following tags are used to specify templates?

78. Which method can be used to remove Models associations ?

79. Which code example can you use fetch with sending id?

80. How can a set of models be retrieved from the server and into the collection when they arrive?

2.
Which of the following events executed when the model validation failed?

4.
Which code is correct to create a template in Backbone.js?

5.
Which of the following are built-in events in Backbone?

6.
Using the following code example how can you use fetch with sending id?

7.
Which of the following are Backbone Building Blocks? (choose all that apply)

8.
Which code is used when model or collection is synced successfully with server?

9.
How do you we get only the first 20 items in a backbone collection?

10.
Which of the following route parameter's statement is correct of Router? (choose all that apply) router.route(fun, name, [callback])

11.
Which of the following code will you use if Defining a root route?

12.
In Backbone, ____ provide a way for you to connect URLs (either hash fragments, or real) to parts of your application. Any piece of your application that you want to be bookmarkable, shareable, and back-button-able needs an URL.

13.
What is Backbone.sync used for?

14.
__ removes all of the view's delegated events. It is useful if you want to disable or remove a view from the DOM temporarily?

15.
How can you retrieve a set of model from the server and set them to the collection when they arrive?

16.
To create a Collection class of your own, extend Backbone.Collection, providing instance properties, as well as optional classProperties to be attached directly to the collection's constructor function?

17.
In Backbonejs, how can you change templates of a view on the fly?

18.
Which models can be created by extending Backbone?

19.
Which of the following are Backbone Model object functions?

20.
The sync method is called with the following parameters? (choose all that apply)

21.
You can limit number of models in Collection using the following code?

22.
How does Backbone decide if it should use POST/GET/ Request to the Server and what are the methods Backbone has Reserved for these Operations?

23.
Which of the following configuration options are available in Backbone.js

24.
Thorax provides an extended event _____ to simplify binding of common events from models and collections?

25.
This method is called internally within the router, whenever a route matches and its corresponding callback is about to be executed. Return __ from execute to cancel the current transition. Override it to perform custom parsing or wrapping of your routes.

26.
Trigger callbacks for the given event, or space-delimited list of events. Subsequent arguments to ___ will be passed along to the event callbacks?

27.
Which of the following Collection methods is an equivalent to instantiating a model with a hash of attributes?

28.
BackboneJS test with jasmine if parameters are passed to fetch?

29.
Which of the following code is Backbone.Events interface is by default mixed into other Back‐ bone components?

30.
Rather than adding or removing models individually, you might want to update an entire collection at once. ___ takes an array of models and performs the necessary add, remove, and change operations required to update the collection?

31.
Is it possible to subscribe on event when backbonejs view is removed from DOM?

32.
In Backbone, ____ provide a way for you to connect URLs (either hash fragments, or real) to parts of your application. Any piece of your application that you want to be bookmarkable, shareable, and back-button-able needs a URL?

33.
Views are based on ____ templates that provide layouts for rendering?

34.
Which of the following code is True about Template Function Call?

35.
Which of the following tags are using to specify templates?

36.
How can a set of model retrieved from the server and set them to the collection when they arrive?

37.
Which of the following events is activates when the requesting to the server failed?

38.
How Backbone Decides if it Should Use POST/GET/ Request to the Server and What are the Methods Backbone has Reserved for these Operations?

39.
How to limit number of models in Collection using the following code?

40.
Models expose an __ attribute which represents an internal hash containing the state of that model. This is generally in the form of a JSON object similar to the model data you might find on the server but can take other forms?

41.
Which of the following is Backbone Model object functions?

42.
Sync:Manages actual persistence by a function that Backbone calls every time it attempts to read or save a __ to the server?

43.
Models can be created by extending Backbone.Model which of the following?

44.
Which of the following styles of variables is using Backbone in routers?

45.
BackboneJS fetch collection based on parameters using the following code?

46.
Unbinding function, is used to remove the validation binding on the model and removing all events hooked up on the?

47.
Which of the following events are exists in Backbone Events System?

48.
Which of the following dependency must be added for Backbone.js setup?

49.
Backbone offers an opt-in for HTML5 pushState support?

50.
In Backbone.js, modelbinder class is used to make synchronization process of and together?

51.
Suppose what are the typical problems you might face with the Backbone view code?

52.
The default sync handler maps CRUD to REST?

53.
What are the default Backbone.Sync handlers?

54.
Backbone.sync, transforms the and operations into HTTP requests?

55.
____ gives a direct reference to the attributes and you should be careful when playing with it. Best practice would suggest that you use .set() to edit attributes of a model to take advantage of backbone listeners?

56.
Backbone.sync is a _____ to synchronize your collections and models across the systems?

57.
The architecture of Backbone.js contains the following modules?

58.
Which of the following method is enables History API?

59.
Underscore is primarily used for its utility __ and json2.js?

60.
You can remove all listeners on a particular object by using?

61.
In Backbone.JS how do you pass two models to view while creating object of a view using the following code?

62.
Which of the following options can be passed directly to the View?

63.
In BackboneJS, It's possible to auto-bind BackboneJs view to existing element(s)?

64.
How can you will use Underscore Templates in Backbone.js Views?

65.
Create a view that will build it's own DOM element using the following code?

66.
True or false: removes method removes listeners from the removed element.

67.
In BackboneJS, Read the following code and can you change templates of a view on the fly?

68.
Which following statement is correct about attach Listeners to Events in a View?

69.
A Backbone view to a different DOM element, use __, which will also create the cached $el reference and move the view's delegated events from the old element to the new one?

70.
If {parse: __} is passed as an option, the attributes will first be converted by parse before being set on the model.

71.
Which method can be used to create a deep copy of the object?

72.
Which code creates a template in Backbone.js?

73.
How can the default sync handler map CRUD to REST?

74.
Which of the following iteration functions exist in Backbone Collections?

75.
Which method can be used to create own Model?

76.
How can a Backbone Model be created? Check all that apply.

77.
Which of the following tags are used to specify templates?

78.
Which method can be used to remove Models associations ?

79.
Which code example can you use fetch with sending id?

80.
How can a set of models be retrieved from the server and into the collection when they arrive?

81.
According to the code below, how can a model be removed from a collection and server? var myCollection = new MyCollection(); ... var myModel = myCollection.get(2); ...

82.
Which code is True about Backbone.Collection?