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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?

 598

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 }

Which built-in method adds one or more elements to the end of an array and returns the new length of the array?

818

What is strict mode?

708

What is the role of break and continue statements?

512

Why would you use a sticky session?

517

How to select an element by id and swapping an image?

484




What is the best free ide?

485

Explain function hoisting in javascript?

491

What are types of javascript?

473

Is javascript server side or client side?

464

What is NaN in Javascript?

534

What are the variables in javascript?

568

How to write a hello world example of javascript?

490

What is the difference between var and let?

487

What are data structures in javascript?

521

What is stack in javascript?

503

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