JavaScript is a scripting or programming language that allows you to implement complex features on web pages. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user. It is lightweight and most commonly used as a part of web pages , whose implementations allow client-side script to interact with the user and make dynamic pages.

Advantages of JavaScript

  1. Less server interaction.
  2. Immediate feedback to the visitors.
  3. Increased interactivity.
  4. Richer interfaces.

Browsers Supporting JavaScript

JavaScript is supported by the following browsers :

  1. Netscape Navigator (beginning with version 2.0)
  2. Microsoft Internet Explorer (beginning with version 3.0)
  3. Firefox
  4. Safari
  5. Opera
  6. Google Chrome
  7. Any other browser whose vendor licensed or implemented JavaScript.

Briwsers - Javascript Programming

JavaScript Versions



Year Name
1997 ECMAScript 1
1998 ECMAScript 2
1999 ECMAScript 3
1999 ECMAScript 4
2009 ECMAScript 5
2011 ECMAScript 5.1
2015 ECMAScript 2015
2016 ECMAScript 2016
2017 ECMAScript 2017
2018 ECMAScript 2018
2019 ECMAScript 2019
2020 ECMAScript 2020
2021 ECMAScript 2021

Development Tools

Every major web browser has built-in web development tools , including a JavaScript debugger.