AJAX使用post发送数据xml格式接受数据

function getXMLData(tagName)//获取XML数据，分IE和非IE处理
{
var info;

if(window.ActiveXObject) //IE取回XML文件方法
{
var doc = new ActiveXObject("MSxml2.DOMDocument");

doc.loadXML(xmlObject.responseText);

info = doc.getElementsByTagName(tagName);

}
else //---------------------------非IE取回XML文件方法
{
info = xmlObject.responseXML.getElementsByTagName(tagName);

}

return info;
}

!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>
meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
title>省事联动测试/title>
style type="text/css" >
select{
width:100px;
}
/style>
script type="text/javascript" >

 

var thisId = ""; //当前操作的selectI的D

 

var xmlObject; //ajax 对象全局变量，

 

function getAjaxObject()//AJAX 1号线,返回一个AJAX 对象引擎
{
var xmlObject ;

if(window.ActiveXObject)
{

xmlObject = new ActiveXObject("Microsoft.XMLHTTP");
}
else
{
xmlObject = new XMLHttpRequest();
}

return xmlObject ;
}

 

function ajaxCall(id) //ajax 二号线 ，这里采用 post 传递参数
{
xmlObject = new getAjaxObject();

if(xmlObject)
{
var url = "chuli.php";

var data = "id=" + id;

xmlObject.open("post",url,true);

 

xmlObject.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

xmlObject.onreadystatechange = repayFuncion;

xmlObject.send(data);

}

}

function repayFuncion() //ajax 四号线 ，这里采用 xml 接受数据，这里还涉及到xmldom编程
{

if(xmlObject.readyState==4 xmlObject.status==200)
{

var info = getXMLData("res");//获取XML数据

$(thisId).length = 0;//清楚select 中的option节点

for(i=0;iinfo.length;i++)
{

var optionId = info[i].childNodes[0].childNodes[0].nodeValue;

var optionValue = info[i].childNodes[1].childNodes[0].nodeValue;

var optionNode = document.createElement('option');

optionNode.value = optionId;

optionNode.innerText =optionValue;

$(thisId).appendChild(optionNode);

}

}

}

function getXMLData(tagName)//获取XML数据，分IE和非IE处理
{
var info;

if(window.ActiveXObject) //IE取回XML文件方法
{
var doc = new ActiveXObject("MSxml2.DOMDocument");

doc.loadXML(xmlObject.responseText);

info = doc.getElementsByTagName(tagName);

}
else //---------------------------非IE取回XML文件方法
{
info = xmlObject.responseXML.getElementsByTagName(tagName);

}

return info;
}

function $(id)//常用函数，通过ID取对象
{
return document.getElementById(id);
}

function getProvice()//获取省
{
thisId = "Province";

var id = '1';

ajaxCall(id);

}

function getCity()//获取市
{
thisId = "City";

$("County").length = 0;

var id = $("Province").value;

ajaxCall(id);

}

 

function getCounty()//获取县城
{
thisId = "County";

var id = $("City").value;

if($("City").length)
{
ajaxCall(id);
}

}

window.onlaod = getProvice();//页面开始载入省

/script>
/head>

body>
form action="javascript:void(0)" method="post">
label for="username" >用户名：/label> input type="text" name="username" id="username" width="60px" />br />
label for="psd" >密 nbsp;码：/label> input type="password" name="psd" id="psd" width="80px" />/br>
label for="psd" >地 nbsp;址：/label>
select id="Province" onclick="getCity()">
/select>nbsp;

select id="City" onclick="getCounty()" >
/select>nbsp;

select id="County" name="xian" >
/select>
input type="submit" value="提交" />
/form>
/body>
/html>

?php
//3号线
header("Cache-Control:no-cache");

header("Content-Type: text/xml; charset=gb2312");//这里要写XML

require("function.php");

$id = $_POST['id'];

file_put_contents("my1.txt",$act . "------" . $ziduan);

$result = getresultById($id);

$info = "mes>";

foreach($result as $row)
{
$info .= "res>";

$info .= "id>" . $row['region_id'] . "/id>";

$info .= "name>" . $row['region_name'] . "/name>";

$info .= "/res>";
}

$info .= "/mes>";

echo $info;

?>

?php

function getresultById($id)
{
$con = mysql_connect("localhost","root","");

if($con)
{
$charset = "gb2312";
mysql_query("SET character_set_connection=$charset, character_set_results=$charset, character_set_client=binary"); //这句是必须的，解决中文乱码加密问题s
mysql_select_db("ajax",$con);

$sql = "select * from ecs_region where parent_id = '$id'";

$res = mysql_query($sql);
$arr = array();
while($row = mysql_fetch_assoc($res))
{
$arr[] = $row;
}

return $arr;
}
return false;
}