如何把前台JS取的值传到后台中并写入表?AJAX?

Question

function validate()
 {
    var ddlProvince=document.getElementById("<%=ddlProvince.ClientID %>");
    var ddlCity=document.getElementById("<%=ddlCity.ClientID %>");
    var ddlVilliage=document.getElementById("<%=ddlVilliage.ClientID %>");
    ddlProvince.value;//第一个的值....以此为例可以拿到其余的值
  }

Answer 1

http://topic.csdn.net/u/20090519/09/c14682c9-b3ec-45f7-a1bb-86872e28f942.html另外简单的办法就是用一些隐藏控件传值.

Answer 2

隐藏控件也要用js的吧？
放一个服务器的隐藏域，用js把值赋给它，然后 到服务器取

Answer 3

function Ajax(url)
{
    var xmlReq;
    if(window.ActiveXObject)
    {
       try
       {
           xmlReq = new ActiveXObject('Msxml2.XMLHTTP');
       }
       catch(e)
       {
           xmlReq = new ActiveXObject('Microsoft.XMLHTTP');
       }             
    }
    else (window.XMLHttpRequest)
    {
       xmlReq = new XMLHttpRequest();
    }
    this.send = function(content)
    {
        if(!xmlReq){return;}
        else
        {
           xmlReq.open('POST',url,false); //同步
           xmlReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;charset=utf-8');
           xmlReq.send(content);
           return eval(xmlReq.responseText);         
        }
    }
}function Add()
{
  var ele = document.getElementById('...').value;
  var sender = new Ajax('URL地址');
  sender.send('value='+ele);
}
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ASPX页面Request['value']就行了