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Chapter 18. Introduction to JavaScripting > Introduction to JavaScript

Introduction to JavaScript

JavaScript enables you to embed commands in an HTML page. When a compatible Web browser, such as Netscape Navigator 2 or higher or Internet Explorer 3 or higher, downloads the page, your JavaScript commands are loaded by the Web browser as a part of the HTML document. These commands can be triggered when the user clicks page items, manipulates gadgets and fields in an HTML form, or moves through the page history list.

Note

Microsoft's Internet Explorer Web browser supports JScript, Microsoft's own implementation of Netscape's JavaScript language. JScript is compatible with JavaScript, but some differences exist. When programming in JavaScript, it is always a good idea to test your scripts by using both browsers.



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