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

JavaScript Interview Questions

Questions Answers Views Company eMail

How to achieve inheritance in javascript?

978

How to convert json object to string?

1046

How to open url in a new tab in javascript?

991

How to modify the url of the page without reloading the page?

988

Can you explain the difference between == and ===?

1105

What is "this"?

934

Explain how to write class methods vs. Instance methods.

1009

How do you define a class and its constructor?

975

Explain a story about javascript performance problems?

928

What is a closure and why are they so useful to us?

981

How to convert a string to lowercase?

1170

Explain why asynchronous code is important in javascript?

1024

What is function overloading in javascript?

1054

Can you explain the difference between call and apply?

983

What are two-way data binding and one-way data flow, and how are they different?

1066

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Un-Answered Questions { JavaScript }

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

996

Is javascript a programming language?

907

What boolean operators can be used in JavaScript?

1020

How can you get the reference of a caller function inside a function?

1024

How to print a web page using javascript?

969

What is the microsoft version of javascript?

1057

Write the point of difference between web-garden and a web-farm?

945

Does javascript have the concept level scope?

1002

How do you trim in javascript?

940

How many types of functions are there in javascript?

926

What is question mark in javascript?

902

Is there any difference between javascript and jscript?

949

Can you assign an anonymous function to a variable and pass it as an argument to another function?

871

How do you write a comment in javascript?

871

How to convert a string to a number using javascript?

1054

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