Simple validating contact form
However, for our purposes, the absence of any popup error message(s) upon form submission indicates that the form submission was indeed successful, i.e., the data entered into the form passed all of the script validation test(s).
To revise an existing validation rule, right-click on the event/behavior line in the Behaviors panel and select Edit Behavior from the popup menu.
If the user has Java Script disabled, PHP validation will kick in when the form is submitted, and the user will be redirected back to the Form with messages about their missing fields.
In the first part of this series I introduced various forms of validation including some best practices, the difference between client-side and server-side validation, the types of validation including separation and indications for required fields, correct format, and confirmation fields.
Before you ask, and someone always does, these examples will currently work in the following browsers: Safari 5, Chrome 6, Opera 9, Firefox 4 Beta and the i Phone/i Pad.
Different browsers may mark the input box in some way (Firefox 4 Beta adds a red box-shadow by default), display a warning (Opera) or even prevent the form from being submitted if this field has no value.Server-side validation incorporates code validation into a form handler. NET application on the server that provides the functionality that your form needs for processing after a customer has submitted it.