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 use of debugger keyword in javascript?

899

What is the use of a date object in javascript?

1059

How to validate a form in javascript?

946

What is the use of a boolean object in javascript?

1035

How to write a hello world example of javascript?

939

How do you target a specific frame from a hyperlink?

926

What are the boolean operators supported by javascript? And operator: &&

997

How to detect the operating system on the client machine?

924

What do you understand by this keyword in javascript?

882

How do we add javascript onto a web page?

949

How can javascript be used to personalize or tailor a web site to fit individual users?

877

How can javascript make a web site easier to use? That is, are there certain javascript techniques that make it easier for people to use a web site?

1093

What web sites do you feel use javascript most effectively (i.e., Best-in-class examples)? The worst?

934

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

922

How will you get the checkbox status whether it is checked or not?

884

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Un-Answered Questions { JavaScript }

Which built-in method sorts the elements of an array?

1025

Difference between undefined and undeclared variables?

951

What is the most popular javascript library?

918

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

929

What is output of “20” + 20 + 20 and “20” + ( 20 + 20)? In javascript?

1021

What is meant by vanilla javascript?

978

What are math constants and functions using javascript?

1022

How to read a cookie using javascript?

1146

How to update a function in javascript?

1105

What is the === in javascript?

886

What is ‘this’ keyword in JavaScript?

992

What is dataview in javascript?

950

how to run the servlet in tomcat

2115

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1513

How to get complete current page url with javascript?

928

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