What JavaScript Is
JavaScript is a programming language that you can use to add interactivity to your Web pages. But if you’re not a programmer, don’t panic; there are lots of JavaScripts available on the Web that you can copy and modify for your own use with a minimum of effort. In fact, standing on the shoulders of other programmers in this way is a great technique for getting comfortable with JavaScript.
To make it easier for you to get up and running with JavaScript, we have set up a Web site that supplements this book. We’ve included all the scripts in the book (so you don’t have to type them in yourself !), as well as additional notes, addenda, and updates. You can find our site at http://www.javascriptworld.com.
You’ll often see JavaScript ...
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