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'?

906

How to set the focus in an element using javascript?

1029

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

947

Name the datatypes of javascript?

1020

Difference between undefined and undeclared variables?

952

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

1093

What are undefined and undeclared variables?

967

How to determine the state of a checkbox using javascript?

1220

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

931

How to get value from radiobuttonlist control?

1011

What are javascript closures?when would you use them?

943

Explain hoisting in javascript?

1054

Can you explain how inheritance works in javascript?

933

How about 3+5+"8"?

990

To set all checkboxes to true using javascript?

1098

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Un-Answered Questions { JavaScript }

What is the difference between an array and an object?

1012

Which built-in method removes the last element from an array and returns that element?

925

How many hours learn javascript?

1104

How can you do a character count in javascript?

951

Is javascript a highly secure scripting language?

1030

why we calld java object orinted programming language??

1917

Where do I put javascript code in html?

1024

What is a hash javascript?

1037

What is the prototype object in javascript and how it is used?

982

What is new keyword in javascript?

876

Is javascript open source?

870

What is the difference between scripting and programming?

953

What is DOM? What is the use of document object?

974

How typeof operator works?

1049

Which built-in method returns the index within the calling string object of the first occurrence of the specified value?

1056

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