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 result of below given line of code in java script? 5+4+'7'?

898

How to set the focus in an element using javascript?

1016

What does "1"+2+3 evaluate to?

939

Name the datatypes of javascript?

1010

Difference between undefined and undeclared variables?

944

What is the difference of "settimeout" function and setinterval functions in javascript

1082

What are undefined and undeclared variables?

957

How to determine the state of a checkbox using javascript?

1206

How to get checkbox status whether it is checked or not?

921

How to get value from radiobuttonlist control?

1000

What are javascript closures?when would you use them?

935

Explain hoisting in javascript?

1049

Can you explain how inheritance works in javascript?

926

How about 3+5+"8"?

980

To set all checkboxes to true using javascript?

1081

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Un-Answered Questions { JavaScript }

What is javascript? List some data types supported by javascript?

999

Javascript, Pass by Value or Pass by Reference?

970

What do mean by NULL in Javascript?

1104

How can you convert the string of any base to integer in JavaScript?

1085

Can you assign an anonymous function to a variable?

866

what is pop()method in JavaScript?

1008

How about 3+5+"8"?

980

What do you understand by this keyword in javascript?

867

What are the different types of errors in javascript?

954

What is data type in javascript?

974

How to write a script for "select" lists using javascript

1077

Difference between undefined and undeclared variables?

944

What is the use of dom?

944

What is variables in javascript?

948

What is the ‘Strict’ mode in JavaScript and how can it be enabled?

1010

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