Chapter 7CREATING INTERACTIVITY WITH JAVASCRIPT

JavaScript is one of the three basic building blocks of the Web. If you think about web technologies as a pyramid, HTML/XHTML is one corner of that pyramid handling the actual content of a page. CSS is another corner, adding style to your pages and allowing you to lay them out in a way that is not only attractive but also adds visual impact. JavaScript is the third corner, allowing pages to do more than just be static documents.

One of the biggest questions amongst those who are new to the Web is, what's the difference between JavaScript and something like PHP? The big difference is that JavaScript is executed on the client side (in the visitors' browsers), whereas PHP runs on the server. So in ...

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