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JavaScript
A client-side scripting language primarily used to make web pages interactive. In other words, it's responsible for the 'behavior' of a website, i.e. how HTML elements and CSS style animate and move around on the page.
| First released | 1995 |
| Developed by | Brendan Eich, Netscape Communications |
| Latest stable version | ECMAScript 2021 |
| Open-source | Yes |
| Used by | all websites |
Interesting facts
JavaScript was originally named Mocha and changed to Livescript but ultimately became JavaScript. To start from the beginning, JavaScript derived its name from Java and initially Brendan Eich (the creator of JS) was asked to develop a language that resembled Java for the web-for Netscape.
The first browser to run JavaScript was Netscape 2 in 1996. After Netscape the Mozilla foundation continued to develop JavaScript for the Firefox browser. JavaScript version numbers run from 1.0 to 1.8.