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?

1076

Is Javascript a Functional Programming Language?

1063

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

986

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

994

What is Browser Object Model?

915

Basic methods for opening a popup window using javascript?

918

what data type javascript supports?

926

How will you create new object in javascript?

984

How to create a confirmation box?

889

How to toggle display an html element?

994

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

963

How do you check if a variable is an object

1099

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

875

What is variable typing in javascript?

993

What’s relationship between javascript and ecmascript?

971

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Un-Answered Questions { JavaScript }

In Java coding we will write a public static void main()? Why won't we write as a static public void main()

2535

How host objects are different from native objects in javascript?

956

What are different types of inheritence? Which inheritance is followed in javascript.

868

What is Unobtrusive JavaScript & Why it's Important?

991

Is there automatic type conversion in JavaScript?

909

What are a fixed-width table and its advantages in javascript?

865

Why is javascript dangerous?

899

How to determine the state of a checkbox using javascript?

1128

How to make a array as a stack using javascript?

952

What would be the result of 3+2+”7″?

1414

What are the main uses of javascript?

956

What is a function constructor?

856

Name the numeric constants representing max, min values?

935

What is decodeuri(), encodeuri() in javascript?

986

Explain few difference between null, undefined or undeclared javascript variable?

865

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