ColdFusion enhanced forms
<cfform format="HTML">
and its related tags provide enhanced capabilities to HTML forms. <cfform>
allow for client side data validation for things like
- required fields
- numeric only fields
- data only fields
Other fields have completely new capabilities
<cftextarea richtext="yes">
creates a WYSIWYG HTML editor
<cfform format="flash">
makes flash based forms instead of HTML.
Because <cfform>
functionality is tied in with a specific version of ColdFusion, many developers prefer using other technologies for client side data validation.
For more details: https://learn.adobe.com/wiki/display/coldfusionen/cfform