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

JavaScript Interview Questions

Questions Answers Views Company eMail

Difference Between JavaScript and ECMAScript?

898

How to prevent modification of an object in Javascript?

1159

How would you compare two objects in JavaScript?

955

What is differential inheritance?

941

How to load another html page from javascript?

948

Javascript, Pass by Value or Pass by Reference?

968

Difference between window, document, and screen in Javascript?

1103

What is Date object in JavaScript?

1092

Why extending array is bad idea?

1022

What is the difference between .call() and .apply()?

1022

What are the primitive data types in JavaScript?

1031

Entire content of a JavaScript source file in a function block?

1058

How to detect the OS on the client machine in JavaScript?

1099

What is the use of blur function in JavaScript?

1034

How do you submit a form using JavaScript?

930

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Un-Answered Questions { JavaScript }

Basic methods for opening a popup window using javascript?

971

Where do I put javascript in html?

847

What does the term sticky session mean in a web-farm scenario?

969

Between JavaScript and an ASP script, which is faster?

1156

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

989

How many types of functions are there in javascript?

916

How about 3+5+"8"?

978

How can you create an Object in JavaScript?

1130

What is a module code?

1027

Write about the errors shown in javascript?

890

What is scope chain in javascript?

979

What is local and global scope?

951

What are 2 (shorthand) boolean operators supported by javascript

964

What do “1”+2+4 evaluate to?

932

How to achieve inheritance in javascript?

970

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