jQuery Form Plugin

http://malsup.com/jquery/form/

Overview

The jQuery Form Plugin allows you to easily and unobtrusively upgrade HTML forms to use  AJAX . The main methods,  ajaxForm  and  ajaxSubmit , gather information from the form element to determine how to manage the submit process. Both of these methods support numerous options which allows you to have full control over how the data is submitted.  Submitting a form with AJAX doesn't get any easier than this!

 

Form中的AjaxForm和AjaxSubmit的区别:

JQuery中的AjaxForm和AjaxSubmit使用差不多功能也差不多。很容易误解。 
按照作者的解释： 
AjaxForm  
ajaxForm不能提交表单。在document的ready函数中，使用ajaxForm来为AJAX提交表单进行准备。提交动作必须由submit开始 
ajaxSubmit  
马上由AJAX来提交表单。你可以在任何情况下进行该项提交。

 http://www.cnblogs.com/qiantuwuliang/archive/2009/09/14/1566604.html