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?

995

How to trigger a postback on an updatepanel from javascript?

962

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

889

What is the use of a weakmap object in javascript?

1008

How to validate email in javascript?

1058

In javascript what is an argument object?

1 1642

What is the use of a set object in javascript?

985

Is javascript faster than asp script?

1125

What is the requirement of debugging in javascript?

1002

Define anonymous function.

993

Are java and javascript same?

1055

What is the use of math object in javascript?

991

What is the role of a strict mode in javascript?

1029

Define closure.

963

Name the types of functions.

975

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Un-Answered Questions { JavaScript }

What is difference between undefined variable and undeclared variable?

987

Can array in javascript be extended?

935

How do I run javascript on my iphone?

1020

How to calculate fibonacci numbers in javascript?

1076

How to find operating system in the client machine using javascript?

1011

What is difference between local and global scope in javascript ?

1074

What are the pop-up boxes available in javascript?

998

Is javascript necessary?

904

How do functions work in javascript?

1037

a code in vb script, which creates a table of 5*2 in html this is a static table, one more same dynamic table, as we give input the table should get created.

1605

What do I need to code javascript?

1040

Explain how can you submit a form using JavaScript?

961

What is the role of break and continue statements?

978

What are the uses of javascript in web page designing?

879

What does dynamic component in javascript contain?

1039

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