The JavaScript was invented by Brendan Eich at Netscape (with Navigator 2.0), and has appeared in all Netscape and Microsoft browsers since 1996.JavaScript’s official name is “ECMAScript”. The standard is developed and maintained by the ECMA organisation.
In the early 1990s when the World Wide Web was first created all web pages were static. When you viewed a web page you saw exactly what the page was set up to show you and there was no way for you to interact with the page.
In order to have it respond immediately without having to reload the web page this language needed to be able to run on the same computer as the browser displaying the page.
At the time there were two browsers that were reasonably popular - Netscape Navigator and Internet Explorer. Netscape was the first to bring out a programming language that would allow web pages to become interactive - they called it Livescript and it was integrated into the browser (meaning that the browser would interpret the commands directly without requiring the code to be compiled and without requiring a plugin to be able to run it).This meant that anyone using the latest Netscape browser would be able to interact with pages that made use of this language.
The importance of this scripting language was too great to leave its future development in the hands of the competing browser developers and so in 1996 Javascript was handed over to an international standards body called ECMA who then became responsible for the subsequent development of the language. As a result of this the language was officially renamed ECMAScript or ECMA-262 but most people still refer to it as Javascript.