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

JavaScript Interview Questions

Questions Answers Views Company eMail

What is namespacing in javascript and how is it used?

879

What is the method for reading and writing a file in javascript?

920

What is called variable typing in javascript?

923

Does javascript support automatic type conversion?

1068

What are the two basic groups of dataypes in javascript?

979

Explain window.onload and ondocumentready?

869

How to find operating system in the client machine using javascript?

907

Explain the role of deferred scripts in javascript?

892

How can a page be forced to load another page in javascript?

1045

Is it possible to break javascript code into several lines?

1487

How generic objects can be created?

884

Write about the errors shown in javascript?

849

Define unescape() and escape() functions?

907

Mention what is the disadvantage of using innerhtml in javascript?

953

Explain the for-in loop?

861

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Un-Answered Questions { JavaScript }

How can I learn javascript fast?

905

What is the difference between ‘let’ and ‘const’?

956

What is the difference between the keywords var and let?

945

What is arguments object in JavaScript?

1036

What is the difference between innerhtml & innertext?

830

How many types of functions JavaScript supports?

985

What is a method in javascript?

946

Why global variables are bad javascript?

924

Explain how to write class methods vs. Instance methods.

932

Explain javascript accessors ?

870

If 2 methods have same name and same number of parameters, which one will be executed first?

867

How to test PAGE LOAD TIME, RELOAD THE PAGE, CAPTURE THE URL'S , TEST THE PIXALS please please above all these how to test as a tester

2234

How can you get the reference of a caller function inside a function?

976

What is the use of a set object in javascript?

878

how can we retrieve value from one database server and store them another database server using sql server code

2020

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