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 ?

1007

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

1129

What is 'use strict'?

1061

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

1007

What is singleton class in javascript? Explain

1031

What is null in javascript?

1049

Who introduced javascript?

979

What is console.log()?

1000

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

978

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

1065

How can a value be appended to an array?

987

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

1045

What are screen objects?

978

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

1008

How can the os of the client machine be detected?

964

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Un-Answered Questions { JavaScript }

Is Javascript a Functional Programming Language?

1190

How to create an input box?

1200

Explain the difference between “==” and “===”?

1136

Is javascript event driven?

989

What is a prompt box in javascript?

1038

What is stack in javascript?

1023

What is decodeuri(), encodeuri() in javascript?

1104

Can you have a function within a function in javascript?

939

How about 3+5+"8"?

1038

Taking a developer's perspective, do you think that that javascript is easy to learn and use?

980

What is javascript hoisting?

1008

How to test a string as a literal and as an object ?

1151

Why javascript is called as script for all browsers?

1049

Which is better python or javascript?

1008

What do ellipses mean in javascript?

962

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