Introduction
JavaScript, often abbreviated as JS, is a high-level, interpreted
programming language that conforms to the ECMAScript specification.
It is a language that is also characterized as dynamic, weakly
typed, prototype-based and multi-paradigm. Alongside HTML and css,
JavaScript is one of the three core technologies of the World Wide
Web. JavaScript enables interactive web pages and thus is an
essential part of web applications. The vast majority of websites
use it, and all major web browsers have a dedicated JavaScript
engine to execute it.
History
In 1993, the National Center for Supercomputing Applications (NCSA),
a unit of the University of Illinois at Urbana-Champaign, released
NCSA Mosaic, the first popular graphical Web browser, which played
an important part in expanding the growth of the World Wide Web. In
1994, a company called Mosaic Communications was founded in Mountain
View, California and employed many of the original NCSA Mosaic
authors to create Mosaic Netscape. However, it intentionally shared
no code with NCSA Mosaic. The internal codename for the company's
browser was Mozilla. The first version of the Web browser, Mosaic
Netscape 0.9, was released in late 1994.
