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

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

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);

Right code for Function expression?

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

What is printed in the console? for (let i = 0; i<5; i++) { console.log(i); } console.log(i);

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

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

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

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

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); }