Formcat is a class for performing form validation on the client side. Its goal is to generate Javascript code to validate forms before they are submited to the server.

Formcat Class works as a plug-in for the Smarty template engine. It is a good complement SmartyValidate plug-in that performs server side validation.It supports many built-in validation criteria: empty, range, length,checkbox, radio button, integer, float, email, credit card, list menu,date, date comparison, equality between fields, file size, file type, custom validator calls.

{formcat ...} tags can be located anywhere in the templates, regardless of where the corresponding fields are located in the form.

Features of Formcat Class:
- Multi-forms in a page can be supported.
- Supplied validation criteria to provide empty,range,length,checkbox,radio button,integer,float, email,credit card,list menu,date,date comparison,equality between fields,file size,file type...and customzied validator calls.Auto-genenrate the Javascript for client-side validation by "formcat tags" .
- {catform...} extra function attributes can make your validation colorfully and easily.
- {formcat ...} tags can be located anywhere in your template, regardless of where the corresponding fields are located.It's very flexible.It's very good soultion for validation combining the Smarty-Validate.
- Multiple validators may be used for one field.And User can add other validating javascript function into the function which auto-generated.
- Easy to expand the validator.just copy the custom validator to the validator directory