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后台test.aspx.cs代码:
using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Text;public partial class test : System.Web.UI.Page
...{
protected string strJS;//这个变量是要传递到前台JS代码中的,变量声明的位置一定要在Page类首部,且必须声明为受保护的:protected protected void Page_Load(object sender, EventArgs e)
...{
} //点击按钮事件,在前台动态生成一段JS代码 protected void Button1_Click(object sender, EventArgs e) ...{ string[] str =...{"aaa","bbb","ccc"}; StringBuilder sb = new StringBuilder(); sb.Append("name='"+str[0]+"' "); sb.Append("sex='"+str[1]+"' "); sb.Append("age='"+str[2]+"' "); strJS = sb.ToString();//给strJS赋值 }
}前台test.aspx代码:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="test" %><!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> var name; var sex; var age;//这三个变量和后台传过来的strJS中的变量一致的 <%=strJS %>//这句是关键,相当于response.write(strJS),就是动态的生成了一段JS代码,在你点击了按钮后,就会动态生成这段代码,这段JS代码是一段赋值语句,你可以在点击了按钮后查看网页的源文件 function print() ...{ alert(name+' '+sex+' '+age); } </script></head><body onload="print()"> <form id="form1" runat="server"> <div> <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /></div> </form></body></html>