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 difference between innerhtml and append() in javascript?

1202

How to create a popup warning box?

939

How can you set position of the page (top and left) to 0 using javascript in one line code?

963

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

951

What does the attribute defer/async do when added to the script tag?

919

Is it possible make a call to server side event of any button using javascript?

902

How to create an input box?

1054

What is event bubbling in the dom?

1014

What does “1?+2+4 Evaluate to? What about 5 + 4 + “3??

949

What is the data type of variables in javascript?

944

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

960

what is the difference between the below two statements:- (1) var myname = "akiii"; (2) myname = "akiii";

865

Does javascript have the concept level scope?

957

What is undefined value means in javascript?

1009

To put a "close window" link on a page ?

906

Post New JavaScript Questions

Un-Answered Questions { JavaScript }

How to capture the Image width and height using QTP script ? Kindly answer plz.... Thanx in adavance...

3982

Does javascript support foreach loop?

955

Is not a function error in javascript?

971

In javascript what is an argument object?

1515

What is a named function in JavaScript? How to define a named function?

943

What is the difference between the operators '==' and '==='?

956

How to call a function in every x seconds in javascript?

883

how to read and write a file using JavaScript?

1115

Where do you write javascript?

874

Javascript, Pass by Value or Pass by Reference?

937

Which built-in method calls a function for each element in the array?

1010

Which is best for front end?

837

List some unit testing frameworks javascript

903

What are decodeuri() and encodeuri() functions in javascript?

975

What is the use of debugger keyword in javascript?

861

For More Un-Answered { JavaScript } Questions Click Here