jsVal is a JavaScript program used for validating HTML Forms on the client side. This allows HTML forms to be validated in the browser without having to send a request to a sever (PHP, ASP, Perl...). jsVals saves you from having to write complicated validations on server side as well as helping you avoid having to rebuild and repopulate the form when validation fails. The advantage versus other client side HTML form validators is the ease of use and flexibility you'll gain. jsVal fits the needs for most HTML Forms, and can be also easily be integrated with existing HTML Forms.