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JAVASCRIPT Tutorial Copyright© 1998-2004. HTML, the markup language that describes the appearance of a page, is easy to learn, and requires no background in programming. However, there are limits to what can be achieved inside HTML. The Java programming language was introduced to dramatically extend the Web developer's set of tools, but is still more complex than HTML. Java is very easy to learn; however, like most programming languages, it isn't easy to master. JavaScript bridges this gap. JavaScript offers the Web page author a new level of sophistication without requiring him to become a programmer. JavaScript brings dynamic and powerful capabilities to Web pages, yet JavaScript is no more difficult to learn than HTML. JavaScript can be used to solve common problems, such as validating forms input, and can also be used to create dramatic and visually appealing content, which would be impossible with HTML. JavaScript is a lightweight, interpreted programming language with object-oriented capabilities. JavaScript has evolved over the years, and Netscape has released several versions of the language. Microsoft has released similar versions of the JavaScript language under the name "JScript". And ECMA ( European Computer Manufacturer's Association ) has published three versions of the ECMA-262 standard that standardize the JavaScript language under the awkward name "ECMAScript".
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