请问c#如何循环获取js循环生成的变量的值?
例如html前台代码:
<html>
<head runat="server">
<title>无标题页</title>
<script type="text/javascript">
{
function abc() {
for (i = 0; i <= 5; i++)
{
var a = 1;
var b = 2;
var c = a+b;
alert(c);
}
}
}
</script >
</head>
<body>
</body>
</html>
c#后台代码:
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;
public partial class Default4 : System.Web.UI.Page
{
public string abc = "44";
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
//假设从数据库读出五条数据,然后依次让js执行,并获得js执行后产生的变量 来更新原来数据库的内容
for (int a = 0; a < 5; a++)
{
abc = a.ToString();
Response.Write("<script language=javascript>Change();</script>");//去执行js
string xyz = txt2.Value;//将js生成的变量赋值给txt2,然后c#在这里得到变量
//获取到xyz后会更新数据库,这段代码省略
}
}
} --------------------编程问答-------------------- 这样获取不到哦 除非用Ajax 或者js把值付给一个隐藏控件。在后台去隐藏控件的值 --------------------编程问答-------------------- 加一个Hidden控件然后
function abc() {
for (i = 0; i <= 5; i++)
{
var a = 1;
var b = 2;
var c = a+b;
document.getElementById('Hidden1').value = c;
alert(c);
}
}
后台可以通过Hidden1.value取道该值 --------------------编程问答-------------------- js 能取后台代码,但后台代码别想调用js,
你想实现什么功能?
补充:.NET技术 , ASP.NET