JavaScript Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

JavaScript Interview Questions

Questions Answers Views Company eMail

How to get value of an element by class in javascript ?

888

What is console.log() and why it is used?

1020

What is 'use strict'?

900

what are the difference unescape() and escape() functions?

901

What is singleton class in javascript? Explain

934

What is null in javascript?

929

Who introduced javascript?

877

What is console.log()?

904

What is the difference between "var" and "let" keywords?

886

What are the difference between undefined and not defined in javascript?

940

How can a value be appended to an array?

890

How will you explain closures in javascript? When are they used?

933

What are screen objects?

870

How can javascript codes be hidden from old browsers that don't support javascript?

905

How can the os of the client machine be detected?

851

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Un-Answered Questions { JavaScript }

Are Typescript and Javascript the same?

949

What does "1"+2+3 evaluate to?

886

How to write html code dynamically using JavaScript?

914

What's relationship between JavaScript and ECMAScript? And What are JavaScript types?

1005

Explain closures in javascript?

847

Explain the different types of pop-up boxes you can create in JavaScript.

913

How can you create an Object in JavaScript?

1052

What is the difference between attributes and property?

954

How to create multiline strings in javascript?

912

How to empty an array in JavaScript?

983

What are the scopes of a variable in javascript?

1056

What are the pop-up boxes available in javascript?

911

How can you declare a class in javascript?

1067

How do I open a website code?

956

What is the difference between the keywords var and let?

945

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