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What Is CGI?

Fill-in forms for your Web pages don’t do anything by themselves. Your readers can fill them in, but when they click the Submit button, the data won’t go anywhere unless you’ve written a special script to process the data. (As you can see in the online chapters “Introduction to JavaScript” and “JavaScript and User Input,” you can also use JavaScript and client-side scripting to process some types of data. See the Introduction to this book for details on where to download these chapters.)

So how do you get data from the HTML form to the script? That’s where the Common Gateway Interface (CGI) comes in. By developing CGI scripts, you can make your forms interactive.


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