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JavaScript Interview Questions
Questions Answers Views Company eMail

How to get value of an element by class in javascript ?

 491

What is console.log() and why it is used?

 597

What is 'use strict'?

 519

what are the difference unescape() and escape() functions?

 555

What is singleton class in javascript? Explain

 481

What is null in javascript?

 534

Who introduced javascript?

 497

What is console.log()?

 517

What is the difference between "var" and "let" keywords?

 520

What are the difference between undefined and not defined in javascript?

 521

How can a value be appended to an array?

 485

How will you explain closures in javascript? When are they used?

 546

What are screen objects?

 522

How can javascript codes be hidden from old browsers that don't support javascript?

 509

How can the os of the client machine be detected?

 497

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Un-Answered Questions { JavaScript }

Do you need to declare variables in javascript?

488

How can I prevent others from reading/stealing my scripts or images?

468

What is the use of anonymous function in javascript?

466

What is difference between undefined variable and undeclared variable?

501

What is the default scope in javascript?

431




How to reload the current page?

555

What is callback in javascript?

498

Where javascript variables are stored?

465

what is function of stdio.h

2051

How to make a function in javascript?

473

Explain the process of document loading.

503

What are .js files?

503

What is the difference between "var" and "let" keywords?

520

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

493

How do you add an element at the end of an array?

551

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