What is JavaScript? How use Javacript now a days.

JavaScript is the best popular Scripting language in internet. JavaScript designed for interactivity HTML pages. Script language is a kind of simple JavaScript generally embedded straight in HTML pages. It is interpreted language that it means without primary compilation. It can be executed. Without license any body can use it. It work main and main all browser. Such as: Mozilla fire fox, internet explore, chrome, opera, Safar and comet bird, Netscape etc programming language.