Script for validating online forms edatingrussians com
by Christopher Heng, Many websites, like thesitewizard.com, have a feedback form of some sort so that visitors can make comments to the webmasters.
If you have such a form on your site, I'm sure that from time to time, you would have received the results of your form with some essential field (like the email address or the visitor's name, or even the feedback itself) omitted. One way around it is to validate the essential fields with a simple Java Script.
My feeling is that this article already describes how to generate the XMLHttp Request (Ajax) request, passing GET or POST variables to a server-side script using our Java Script class, and the related article referred to above provides a complementary PHP class for generating XML responses, so really all that's left is basic programming to process the incoming variables and generate the relevant XML response.
For those having trouble getting started, here's a walk-through: Hopefully that solves the problems some people have had implementing the code.
These elements can then be referenced in the XML file that is returned by the Ajax call.
The 'empty comment" in the DIV is just a place-holder - required in some older browsers when a DIV is empty, but needs later to be referenced by a script.
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When we call the function we pass three parameters: the method (in this case 'check Email' or 'check Age') to use for testing, the value to test, and the id of the input field (target).
The target value is also used to work out the id of the relevant checkbox and the DIV that will display feedback.