Validating forms in html

Posted by / 05-Aug-2017 09:38

Validating forms in html

So now instead of typing the same code for each of our input fields we simply check each $_POST variable with the check_input function and that's it.

Lisa Wollin Microsoft Corporation May 2004 Applies to: Microsoft® Office Front Page® 2003 Microsoft Front Page 2002 Microsoft Front Page 2000 Summary: Learn how validate HTML form fields using Java Script in Microsoft Office Front Page 2003.

The CGI script is still more reliable, as it always works regardless of whether Java Script is enabled on the client-side or not; but having this extra safety barrier is a nice thing to have in place.

It makes your page much more user-friendly, and takes out the frustration of having to fill out the same form repeatedly.

For example, you may want to ensure that someone inserts a valid e-mail address into a text box, or perhaps you want to ensure that someone fills in certain fields.

Once you have an HTML form up and running, you will often want to make sure that all the important fields are filled in.The zip file contains the javascript file, examples.The script has a catalog of almost all the common validation types built-in.It's also very precise, as you can point out the exact field where there's a problem.We're going to be checking the form using a function, which will be activated by the form's Validating this form would be considerably simpler than one containing radio buttons or select boxes, but any form element can be accessed.

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If you use the following script and Perl source you will know how to validate an entire form at once, displaying a series of error messages that your reader can then go back and fix.

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