Lesson 12:Introducing JavaScript

JavaScript is a scripting language for adding functionality to HTML pages. Its scripts are embedded in HTML files and run completely within the browser. JavaScript turns the browser into an application that runs other applications, rather than one that just displays documents. Support for JavaScript is included in Netscape, Internet Explorer, Mozilla Firefox, and Opera. The ongoing evolution of JavaScript is being managed by ECMA, a European standards body.

As with most technologies in use on the Internet, and especially the World Wide Web, JavaScript is under constant development. It moved rapidly from version 1.0 in Netscape Navigator 2 to version 1.1 in Navigator 3, version 1.2 in Navigator 4, version ...

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