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

JavaScript Interview Questions

Questions Answers Views Company eMail

What looping structures are there in JavaScript?

Satyam,

2 14496

How do you create a new object in JavaScript?

Satyam,

3 11262

How do you assign object properties?

Satyam,

3 9721

What is a way to append a value to an array?

Satyam,

5 23574

What is this keyword?

Cognizant, Infosys, Satyam,

9 15688

What is the difference between java and java script?

IWW, Wipro,

9 22925

How to prevent a window not to be clicked or selected any way in java script?

1989

What are the methods of validating whether the form is secure?

1 5751

Write sample code for pagination using java script.

3 28603

What is the main difference between Client side JavaScript and and Server side Java Script?

Ramco,

7 21030

How to add a combo box dynamically at run time in Java script?

5 37792

How to go next field without filling the text? Which function should we use?

4 13183

Explain about session? Where it runs & what are different types of session handling?

1 8211

We are facing problem with the compatibilty of IE 7 and IE 6.We are calling a showModal window that is working fine in IE6 but with IE7 it opens a new Window and Data is not getting poputaled.In some pages it Gives an error "The webpage you are viewing is trying to Close the window.Do you want to close this window".

SAP Labs, TCS,

4 10107

Give code Email Checking

3 7512

Post New JavaScript Questions

Un-Answered Questions { JavaScript }

What is object freeze?

879

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

941

What are the application of javascript?

962

What is the use of blur function in JavaScript?

1039

How do I use an external javascript file?

1017

What is the difference between == and ===? Which one would you use?

1074

Describe negative infinity in javascript?

978

Explain closures in javascript?

901

What is variable typing?

1026

What is unescape() function?

1123

How to test for bad numbers using javascript?

976

How will you explain closures in javascript? When are they used?

994

What are different types of scope chain available in javascript?

869

Can I write javascript in notepad?

938

What is the disadvantage of using innerhtml in javascript?

1164

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