默认是启用的，也可以在配置文件里设置启用和关闭这项功能；
<appSettings>
<add key="ClientValidationEnabled" value="true" /><add key="UnobtrusiveJavaScriptEnabled" value="true" />
</appSettings>
@Html.ValidationSummary()<p>
@Html.LabelFor(model=>model.Title)@Html.EditorFor(model=>model.Title)@Html.ValidationMessageFor(model=>model.Title,"*")</p>
[Required][StringLength(50,ErrorMessage="Title cannot be longer than 50 characters")]public string Title{get;set;}[Range(1,10000,ErrorMessage="The auction‘s starting price must be at least 1")]public decimal StartPrice{get;set}
Asp.net mvc框架从第三版提供客户端支持,布布扣,bubuko.com
原文：http://www.cnblogs.com/caigen029/p/3575688.html