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 an element by class in javascript ?

1098

Is javascript multi-threaded or single-threaded?

958

Explain javascript debounce function?

1035

What is javascript? List some data types supported by javascript?

1009

List few difference between java and javascript?

1006

How to clone an object in javascript?

1009

Explain spread operator in javascript?

961

Explain equality operators in javascript?

973

Explain mul function in javascript?

968

List few difference between primitive and non primitive javascript data types?

990

Explain promise in javascript?

864

What is the use of let & const in javascript?

955

What is use of settimeout function in javascript?

1110

What are the different types of errors available in javascript?

997

How to calculate fibonacci numbers in javascript?

1032

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Un-Answered Questions { JavaScript }

What are the advantages of using external javascript?

941

What is the difference between the operators '==' and '==='?

1001

What are nodes in javascript?

982

What are javascript functions?

923

What web sites do you feel use javascript most effectively (i.e., Best-in-class examples)? The worst?

934

what is a difference of subclass and main class

1809

How to calculate fibonacci numbers in javascript?

1032

How to add buttons in javascript?

873

Why does the browser display the slow script warning?

1004

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

1052

How to force a page to go to another page using javascript ?

907

Do you need to declare variables in javascript?

921

What is javascript used for on iphone?

917

Is not a function error in javascript?

1024

What is the potential disadvantage of using a sticky session?

940

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