javascript方法获取后台控件调用、传参

来源：互联网发布：mysql 删除触发器编辑：程序博客网时间：2024/06/05 18:48

1) 后台代码:

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace JSDEmo{    public partial class _Default : System.Web.UI.Page    {        private TextBox txtDemo;        private Button btnDemo;        protected void Page_Load(object sender, EventArgs e)        {            txtDemo = new TextBox();            txtDemo.ID = "txtDemo";            btnDemo = new Button();            btnDemo.ID = "btnDemo";            btnDemo.Text = "Demo";            this.FindControl("ContentPanel").Controls.Add(txtDemo);            btnDemo.OnClientClick = string.Format("return demo('{0}');",txtDemo.ClientID);            this.FindControl("contentPanel").Controls.Add(btnDemo);        }    }}

2) 前代代码:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="JSDEmo._Default" %><!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></title>    <script language="javascript" type="text/javascript">        function demo(clientId) {            var txt = document.getElementById(clientId);            if (txt.value == "") {                alert("请输入数据!");            }            return false;        }    </script></head><body>    <form id="form1" runat="server">    <div>        <asp:Panel ID="contentPanel" runat="server"></asp:Panel>    </div>    </form></body></html>