fileupload控件 文件类型客户端验证实现代码_javascript技巧

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>无标题页</title> <form id="form1" runat="server"> <div> <button id="Button1" runat="server" text="上传" enabled="False"></button> <fileupload id="FileUpload1" runat="server" onchange="javascript:CheckFileType();"></fileupload> </div> </form>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]