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?

975

What are different types of scope chain available in javascript?

833

What is difference between local and global scope in javascript ?

977

What is output of undefined * 2 in javascript?

895

Explain function hoisting in javascript?

857

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

955

List some design patterns in javascript?

825

How host objects are different from native objects in javascript?

965

How to redirect a page to another page in javascript?

938

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

972

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

934

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

856

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

1003

What are ‘settimeout()’?

1025

What is javascript hoisting?

905

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Un-Answered Questions { JavaScript }

What is array constructor in javascript?

984

What is the syntax of ‘self invoking function’? Give an example?

890

How to create an input box?

1052

What is whitespace in javascript?

941

What is the difference between rootscope and scope?

915

What is the difference between childNode and children?

1015

Which is the best website to learn javascript?

860

What is a closure in javascript?

972

What is the difference between a web-garden and a web-farm?

901

How to create a cookie using javascript?

1019

What is purpose of onerror event handler in javascript?

886

What is slug in javascript?

971

Is there any difference between javascript and jscript?

895

How do we add javascript onto a web page?

917

How to manage exception handling in javascript?

947

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