JavaScript

JavaScript is a lightweight, interpreted programming language. It is designed for creating network-centric applications. It is complimentary to and integrated with Java. JavaScript is very easy to implement because it is integrated with HTML. It is open and cross-platform.

Simply, JavaScript is the programming language of HTML and the Web. JavaScript is easy to learn. This tutorial will teach you JavaScript from basic to advanced.
Why Study JavaScript?

JavaScript is one of the 3 languages all web developers must learn:

HTML to define the content of web pages. CSS to specify the layout of web pages . JavaScript to program the behavior of web pages

Web pages are not the only place where JavaScript is used. Many desktop and server programs use JavaScript. Node.js is the best known. Some databases, like MongoDB and CouchDB, also use JavaScript as their programming language.

JavaScript and Java are completely different languages, both in concept and design. JavaScript was invented by Brendan Eich in 1995, and became an ECMA standard in 1997. ECMA-262 is the official name of the standard. ECMAScript is the official name of the language.
JavaScript Tutorial

JavaScript Can Change HTML Content, Styles (CSS),  Can Show/Hide HTML Elements and many more. Learn JS Tutorials

JavaScript Functions

A JavaScript function is a block of code designed to perform a particular task. A JavaScript function is executed when “something” invokes it (calls it). Learn JS Functions

JavaScript Forms

Learn JS Forms and Forms API.

JavaScript HTML DOM

With the HTML DOM, JavaScript can access and change all the elements of an HTML document. With the object model, JavaScript gets all the power it needs to create dynamic HTML. Learn HTML DOM

JavaScript Reference

This section contains a complete JavaScript reference documentation. The references describe the properties and methods of all HTML AND JavaScript objects, along with examples. Learn JS References