Updatepanel jquery 失效解决方案

　　　　js失效是因为Updatapanel没有postback， js不会重新加载，所以失效。我们必须在页面中的Updatepanel中重新加载js，童鞋们请参考以下例子：

<%@ Page Title="About Us" Language="vb" MasterPageFile="~/Site.Master" AutoEventWireup="false"
    CodeBehind="About.aspx.vb" Inherits="JavaScriptSample.About" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
    <script type="text/javascript" src="../Scripts/jquery-1.4.1.min.js"></script>
    <script type="text/javascript">
        $(function() {
            BindEvents();
        });
　　　　function BindEvents() {

　　　　　　$(":checkbox:first").bind('click', function () {
                if (this.checked == true) {
                    $(":checkbox:gt(0)").attr('checked', 'true');
                } else {
                    $(":checkbox:gt(0)").removeAttr("checked")
                }
            });

            $(":checkbox:gt(0)").bind('click', function () {
                var checkedCounter = 0;
                $(":checkbox:gt(0)").each(function () {
                    if (this.checked == true) {
                        checkedCounter++;
                    }
                });

                if (checkedCounter == 4) {
                    $(":checkbox:first").attr('checked', 'true');
                } else {
                    $(":checkbox:first").removeAttr("checked")
                }
            });

　　　　}
    </script>
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <ContentTemplate>
            <script type="text/jscript" >
                var prm = Sys.WebForms.PageRequestManager.getInstance();
                prm.add_endRequest(function () {
                    // re-bind your jquery events here
                    BindEvents();
                });
            </script>
            <asp:CheckBox ID="cbAll" runat="server" Text="cbAll" />
            <asp:CheckBox ID="CheckBox1" runat="server" Text="cb1" />
            <asp:CheckBox ID="CheckBox2" runat="server" Text="cb2" />
            <asp:CheckBox ID="CheckBox3" runat="server" Text="cb3" />
            <asp:CheckBox ID="CheckBox4" runat="server" Text="cb4" />
            <asp:Button runat="server" ID="btn1" Text="Text" />
        </ContentTemplate>
    </asp:UpdatePanel>
</asp:Content>

呵呵！希望对您有用！