What will the log display after executing the following? var book = { page1: "Once upon a time...", page2: "And thus they traveled north...", page3: "The rock golem hoisted...", printPages: function() { return book.page1 + book.page2 + book.page3; } } for (page in book) { console.log(page); }

Consider the following code: var bar = (function(){ function Bar(){}; return new Bar(); })(); How will you make another instance of Bar?

If Math.max(3, []); = 3, What is Math.max(3, {}); ?

What is Math.max(5, [1, 4]);?

True or false? 'hello'.charAt(-1) === 'hello'[-1]

Which is not a datatype in javascript according to ECMAScript 6?

How you will do empty an array in JavaScript? var array = ['1', '2', '3', '4', '5', '6'];

Right code for Function expression?

Consider the following code output? var name = 'falleyr*'; if (name == 'jolly') { name += '!'; } else if (name == 'falleyr**') { name += '!!'; } else { name = '!' + name; } name == 'falleyr***' console.log( name);

The Error event is fired when progression has failed and it have the following Property's?

The WheelEvent.deltaMode read-only property returns an unsigned long representing and the Permitted Constant values are?