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A HTML form allows you to get information from your user to the server--where it can be processed by a server-side language like Java, PHP, or Ruby.

An interactive form allows you to use another client-side language, like JavaScript or VBScript, to do some basic checking on the form prior to sending it to the server. This means that your visitors will send far less "bad" data to the server, saving you bandwidth and themselves time and frustration.

Through the use of AJAX, you can ever make JavaScript calls to the server-side programming. This gives you the ability to, for instance, query the database without submitting all of the data contained in the form.

It's important to remember, however, that JavaScript and its ilk cannot be relied upon to do error checking. Clients can shut off these technologies, so adding an interactive error check to your form doesn't get you out of also checking the POST on the server.

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allows a user to enter data that is sent to aserver for processing.

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Q: Why do you need an Interactive Form in a webpage?
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