在javascript中获取用户控件里的子控件的值

来源：互联网发布：顾家沙发知乎编辑：程序博客网时间：2024/04/27 22:33

.ascx

<asp:TextBox ID="tbEntName" runat="server" Width="70px"></asp:TextBox><br /><asp:TextBox ID="tbPassword" runat="server" Width="70px" TextMode="Password"></asp:TextBox>

.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="4.aspx.cs" Inherits="_4" %><%@ Register Src="EntLogin.ascx" TagName="EntLogin" TagPrefix="uc1" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server">    <title>无标题页</title>    <script type="text/javascript">  function CheckData()        {          if(document.getElementById("<%=EntLogin1.FindControl("tbEntName").ClientID %>").value == "")           {              alert("名称不能为空！");               return false;            }             if(document.getElementById("<%=EntLogin1.FindControl("tbPassword").ClientID %>").value == "")           {              alert("密码不能为空！");               return false;            }                     return true;            } </script></head><body>    <form id="form1" runat="server">        <div>            <uc1:EntLogin ID="EntLogin1" runat="server" />          <asp:Button ID="btnTest" runat="server" OnClientClick="return CheckData()" Text="测试" />        </div>           </form></body></html>