母版页中使用js取服务器控件ID或class

取ID：

<%@ Page Title="" Language="C#" MasterPageFile="~/Master/ERP.Master" AutoEventWireup="true" CodeBehind="index.aspx.cs" Inherits="AspxERP.Web.Master.index" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
    <script src="../Scripts/jquery-1.4.4.min.js" type="text/javascript"></script>
    <script type="text/javascript">

        $(function () {
            $("#<%=TextBox1.ClientID%>").blur(function () { alert("x"); });

        });
    </script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <p>
        欢迎使用！</p>
<asp:TextBox ID="TextBox1" runat="server" CssClass="Aactiv"></asp:TextBox>
</asp:Content>

 

取Class:

 

<%@ Page Title="" Language="C#" MasterPageFile="~/Master/ERP.Master" AutoEventWireup="true" CodeBehind="index.aspx.cs" Inherits="AspxERP.Web.Master.index" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
    <script src="../Scripts/jquery-1.4.4.min.js" type="text/javascript"></script>
    <script type="text/javascript">

        $(function () {
            $(".<%=TextBox1.CssClass%>").blur(function () { alert("x"); });

        });
    </script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <p>
        欢迎使用！</p>
<asp:TextBox ID="TextBox1" runat="server" CssClass="Aactiv"></asp:TextBox>
</asp:Content>

 

比较简单 我记录下 以后忘记了可以来查下