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

JavaScript Interview Questions

Questions Answers Views Company eMail

why you used Java Script? Can it use for both client side and server side validation purpose?

BeBo Technologies, HCL, Wipro,

12 36203

How do you send a message to the browser in JavaScript?

Four soft, Vsys,

3 12473

What are the security related issues in JavaScript scripts?

Four soft,

3 12628

Does javascript support multidimensional arrays ?

4 11543

Can you call a Java Applet using a JavaScript function?

HCL, Satyam,

2 11122

Can any one tell me how Java is purely an Oops language

3 7082

What is the use of the String Tokenizer

1 9063

What is the relationship between JavaScript and ECMAScript?

NIM, Satyam,

4 21420

What are JavaScript types?

Infosys, Satyam,

11 30006

How do you convert numbers between different bases in JavaScript?

College School Exams Tests, Satyam, UIST, Wipro,

4 17080

What does isNaN function do?

Satyam,

2 11670

What is negative infinity?

CoKinetic, Satyam,

2 9614

What boolean operators does JavaScript support?

Aptech, HCL, Satyam,

5 16734

What does "1"+2+4 evaluate to?

Acheron, Satyam,

10 35405

How about 2+5+"8"?

Satyam,

6 10500

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Un-Answered Questions { JavaScript }

Why typeof null is object?

947

can wwe trace a java program (class)

2303

What is isnan in javascript?

970

What do mean by NULL in Javascript?

1035

What is the potential disadvantage of using a sticky session?

858

Is there automatic type conversion in JavaScript?

904

What is difference between deep and shallow object coping in javascript?

972

Does javascript support automatic type conversion?

1068

How to reload a page using JavaScript?

1087

What is the reason for wrapping the entire content of a javascript source file in a function book?

977

Name the two functions that are used to create an HTML element dynamically?

872

Why do we use javascript?

849

Methods get and post in html forms - what's the difference?

1006

What is difference between var x =1; and x=1;?

1046

Can webassembly replace javascript?

883

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