JavaScript Validation Library
You should NEVER rely on client-side validation of data entered in a web-based form. Since the validation takes place on the client's side, it is really out of your control, and thus is not reliable (they could bypass/modify the requirements without your knowledge). On top of that - this library only works with Internet Explorer, so users with a different browser will not have their information validated at all!
This is a JavaScript validation library which is really useful for validating the values entered into a form field on a web page. It allows you to easily configure the requirements for the values entered (via pre-set rules or your own regular expressions), and specify the messages to display etc when errors are found.
This library is in use on a number of commercial sites, including on the contact form of this website!
Requirements
- Tag-level understanding of HTML is important
- Previous experience with JavaScript coding is strongly recommended