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

JavaScript Interview Questions

Questions Answers Views Company eMail

What are self Executing Functions?

1262

Is Javascript a Functional Programming Language?

1186

Difference between the substr() and substring() in JavaScript?

1109

Which keyword is used to print the text in the screen?

1101

What is Browser Object Model?

1015

Basic methods for opening a popup window using javascript?

1040

what data type javascript supports?

1046

How will you create new object in javascript?

1115

How to create a confirmation box?

994

How to toggle display an html element?

1102

What’s a way to append a value to an array?

1099

How do you check if a variable is an object

1286

When would you use var in your declaration and when you wouldn’t?

976

What is variable typing in javascript?

1115

What’s relationship between javascript and ecmascript?

1162

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Un-Answered Questions { JavaScript }

What does javascript do?

938

What is hoisted in javascript?

1034

What is primitive data types in javascript?

1038

What is difference between scripting and programming?

947

How to create an object using javascript?

1270

Explain the process of document loading.

1023

Why is javascript called richer interface?

1036

Do hackers use javascript?

955

What is the main difference between Map collections and other collections such as Set.

3073

How do you write a comment in javascript?

911

What is the difference between var and let?

994

How to change video files randomly after completing its execution in Javascript?

2379

What is a nan value?

997

What is nodetype in javascript?

1056

What is require in javascript?

1207

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