What is JavaScript?

JavaScript is a client-side scripting language developed by Netscape Communications Inc. It enables interactivity to be embedded right within an HTML document.

Why use JavaScript?

JavaScript is most useful for quick, small-scale applications, like the examples shown below.

Some sample JavaScript applications

These sample applications show some of the practical uses of JavaScript. Note that you will need a web browser that supports JavaScript 1.1 to use these applications, such as Microsoft Internet Explorer version 4 or higher, or Netscape Navigator version 4 or higher):

See the programming section for many more examples of JavaScript, and some tutorials. There is also an improved version of the JavaScript poker game.