What is Javascript?
Wanna know more?
http://en.wikipedia.org/wiki/JavaScript
JavaScript is a prototype-based scripting language that is dynamic, weakly typed, and has first-class functions. Its syntax was influenced by the language C. JavaScript copies many names and naming conventions from Java, but the two languages are otherwise unrelated and have very different semantics. The key design principles within JavaScript are taken from the Self and Scheme programming languages. It is a multi-paradigm language, supporting object-oriented, imperative, and functional programming styles.
Wanna know more?
http://en.wikipedia.org/wiki/JavaScript