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 innerhtml and append() in javascript?

1182

How to create a popup warning box?

935

How can you set position of the page (top and left) to 0 using javascript in one line code?

949

How do you change the style/class on any element?

942

What does the attribute defer/async do when added to the script tag?

914

Is it possible make a call to server side event of any button using javascript?

897

How to create an input box?

1034

What is event bubbling in the dom?

1003

What does “1?+2+4 Evaluate to? What about 5 + 4 + “3??

936

What is the data type of variables in javascript?

934

How do you write an event emitter base class that allows you to add event listeners?

953

what is the difference between the below two statements:- (1) var myname = "akiii"; (2) myname = "akiii";

862

Does javascript have the concept level scope?

947

What is undefined value means in javascript?

1001

To put a "close window" link on a page ?

899

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Un-Answered Questions { JavaScript }

Consider the following code: 1 2 3 4 5 (function() { var a = b = 5; })(); console.log(b); what will be printed on the console?

797

Is a relation always a function?

895

How do I use javascript to password-protect my web site?

841

Can you explain the difference between call and apply?

922

How do you write a comment in javascript?

820

How do I view javascript files in chrome?

878

Is there automatic type conversion in JavaScript?

909

How about 3+5+"8"?

940

What is the function of delete operator?

925

What is decodeuri() function?

911

What is trim whitespace google sheets?

874

What is the use of blur function in JavaScript?

986

Are you concerned that older browsers don't support javascript and thus exclude a set of web users? Individual users?

963

What is called variable?

832

Explain javascript accessors ?

871

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