Hello...

I would like to suggest you to make little bit search in search engines before posting question in forums..

Anyway..
Quote:
Original posts by WIKIPEDIA:

JScript is a scripting language based on the ECMAScript standard that is used in Microsoft's Internet Explorer.

JavaScript is a prototype-based scripting language that is dynamic, weakly typed and has first-class functions. It is a multi-paradigm language, supporting object-oriented, imperative, and functional programming styles.