JavaScript Interview Questions
Questions Answers Views Company eMail

What is enum with example?

454

What is array constructor in javascript?

511

Which is faster jquery or javascript?

488

Does spread operator deep copy?

549

How many types of variables are there in javascript?

425

Why javascript is fast?

483

Should you use var or let?

515

What is the microsoft version of javascript?

476

What is object freeze?

494

How do I run code in browser console?

504

How many types of data types are there?

458

How do browsers work?

513

What is enum size?

476

What is meant by object oriented programming?

457

What does polyfill mean?

508


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Un-Answered Questions { JavaScript }

java pgm for reads a file(text file) and removes all the spaces then the text and write this back into the same file. e.g: (Input) _______ chennai is fourth biggest city in india. (output) _______ chennaiisfourthbiggestcityinindia.

1567


List different ways of empty an array in javascript?

442


Difference between '=', '==' and '===' operators?

555


Name the two functions that are used to create an HTML element dynamically?

501


What is innertext javascript?

479






How would you organize your javascript code?

481


What are ‘settimeout()’?

603


How do I retrieve a cookie with a given name using a regular expression?

515


How do I use javascript to password-protect my web site?

496


What is javascript and how it works?

465


How fast can you learn coding?

509


Example of using regular expressions for syntax checking in javascript?

471


What is emotional closure?

479


What is built in function in javascript?

505


What is a closure javascript? Explain

495