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

JavaScript Interview Questions

Questions Answers Views Company eMail

How typeof operator works?

1049

How Does Function Hoisting Work in JavaScript?

944

Can javascript code be broken in different lines?

1048

What is the difference between an Anonymous Function and a named function?

1000

What are the basic groups of dataypes in JavaScript?

976

How do you add an element at the beginning of an array?

960

How to detect browser name using JavaScript?

1039

What are the decodeURI() and encodeURI()?

1053

Are Attributes and Property the same?

1047

Can you access Cookie using javascript?

998

Difference between window.onload and onDocumentReady?

970

What is a function callback?

988

How do you add an element at the end of an array?

1003

What is variable typing?

1038

What is the scope of variables in JavaScript?

1048

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Un-Answered Questions { JavaScript }

How to select an element by id and swapping an image?

887

Is javascript backend or frontend?

881

What does _ mean in javascript?

999

What are javascript closures?when would you use them?

943

What is null in js?

989

Is null === undefined?

913

What is the best ide for javascript development?

901

TypeError: document.getelementbyid(...) is null?

954

Can webassembly replace javascript?

942

Which built-in method returns the string representation of the number’s value?

1145

Write a way by which you can do something on the close of the window ?

1109

What is array in javascript?

966

What is javascript bom?

1074

What does parse Query String return in javascript?

972

What is use of JavaScript and jquery?

1097

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