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

JavaScript Interview Questions

Questions Answers Views Company eMail

What is output of “20” + 20? In javascript?

959

How to trigger a postback on an updatepanel from javascript?

921

How can you to add javascript to a page when performing an asynchronous postback?

859

What is the use of a weakmap object in javascript?

962

How to validate email in javascript?

1010

In javascript what is an argument object?

1 1591

What is the use of a set object in javascript?

946

Is javascript faster than asp script?

1053

What is the requirement of debugging in javascript?

959

Define anonymous function.

953

Are java and javascript same?

991

What is the use of math object in javascript?

956

What is the role of a strict mode in javascript?

990

Define closure.

902

Name the types of functions.

939

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Un-Answered Questions { JavaScript }

How do I get javascript?

936

How to convert a string to a number using javascript?

1056

What would be the result of 3+2+”7″?

1468

Is javascript client side or server side?

943

Which companies are using node js?

893

What are the different functional component in javascript?

916

What is the difference between window.onload and ondocumentready?

913

What output will this program produce System.out.println(x+"+"+y+"="+(x+));

2046

What is the difference between textContent and innerText?

992

What are associative arrays in javascript?

1067

What is variable typing?

1038

all possible test cases for normal number field,name field date field,check box,

1444

Which built-in method returns the calling string value converted to upper case?

960

Do I need javascript enabled?

986

Describe what u had done today?

2242

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