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

JavaScript Interview Questions

Questions Answers Views Company eMail

What is the difference between let and var?

1019

What are different types of scope chain available in javascript?

877

What is difference between local and global scope in javascript ?

1026

What is output of undefined * 2 in javascript?

935

Explain function hoisting in javascript?

903

What is difference between array.splice() and array.slice() method in javascript?

1011

List some design patterns in javascript?

877

How host objects are different from native objects in javascript?

1008

How to redirect a page to another page in javascript?

996

What is the difference between ‘let’ and ‘const’?

1052

If you need to hide the javascript code from the older browser versions, how will you perform it?

978

Have you used any browser for debugging? If yes, how is it done?

895

What is the difference between ‘function declaration’ and ‘function expression’?

1064

What are ‘settimeout()’?

1110

What is javascript hoisting?

949

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Un-Answered Questions { JavaScript }

What do mean by NULL in Javascript?

1110

Which built-in method sorts the elements of an array?

1025

How to create function in JavaScript?

1081

What is lazy loading in javascript?

1042

How to get complete current page url with javascript?

927

Is null === undefined?

912

Is there any ide for javascript?

984

Is javascript enabled on my computer?

912

Is javascript event driven?

930

Is javascript server side or client side?

952

Which built-in method returns the characters in a string beginning at the specified location?

1046

What is a noscript tag?

855

What do ellipses mean in javascript?

922

What are global variables? How are these variable declared and what are the problems associated with using them?

966

What does double mean in javascript?

1127

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