'sys' is undefined 错误.

今天在做TextBox验证时用到一个ValidatorCalloutExtender 控件,配置好后出现'sys' is undefined 这个错误, 查了一下,在web.config中加入以下代码就行了.

<httpHandlers>
2 'sys' is undefined 错误.

<add verb ="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" />
3 'sys' is undefined 错误.

</httpHandlers>

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