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JavaScript Interview Questions
Questions Answers Views Company eMail

what does javascript null mean?

 543

How would you check if a variable is null/undefined?

 553

How to get the contents of an input box using javascript?

 517

What is isnan in javascript?

 528

What does the delete operator do?

 489

What does undefined value mean in javascript?

 570

How can you detect the client operating system using javascript?

 578

What is unobtrusive javascript? How to add behavior to an element using javascript?

 506

Write a way by which you can do something on the close of the window ?

 558

How to get value from dropdown (select) control?

 563

How to hide javascript code from old browsers that dont run it?

 503

How to force a page to go to another page using javascript ?

 512

What is strict mode in javascript?

 540

discuss scoping in javascript?

 522

What is the concept of “functions as objects” and how does this affect variable scope?

 471

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Un-Answered Questions { JavaScript }

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

623

How to create an object in javascript?

602

What is the difference between a web-garden and a web-farm?

477

What is a module code?

520

Can you assign a anonymous function to a variable?

523




What's the Difference Between Class and Prototypal Inheritance?

627

What does the isNaN() function?

559

Where javascript variables are stored?

457

How do I save javascript?

502

Why is javascript so important?

460

What do “1”+2+4 evaluate to?

520

Write a way by which you can do something on the close of the window ?

558

Why javascript is called as script for all browsers?

466

Explain the typeof operator?

537

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

546

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