【 tulaoshi.com - Web开发 】
到此就可以就发送请求读取服务器端的XML数据了,最后要做的就是处理数据了。 关于XMLHttpRequest对象,请参考About XMLHttpRequest Object一文。
看例子:
//AjaxDemo.html
!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=utf-8" /
titleAsynchronous JavaScript And XML/title
/head
body
script type="text/javascript"
var xmlHttp=null;
function readyStateChangeHandle()
{
if(xmlHttp.readyState==4)
{
if(xmlHttp.status==200)
{
var xmlDOM=xmlHttp.responseXML;
var xmlRoot=xmlDOM.documentElement;
try
{
var xmlItem=xmlRoot.getElementsByTagName("item");
alert(xmlItem[0].firstChild.data);
}
catch(e)
{
alert(e.message);
}
}
}
}
function ajaxRequest()
{
if(window.XMLHttpRequest)
{
xmlHttp=new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlHttp.onreadystatechange=readyStateChangeHandle;
xmlHttp.open("GET","data.xml",true);
xmlHttp.send(null);
}
/script
input type="button" onclick="ajaxRequest()" value="Take me to the world of AJAX" /
/body
/html
//data.xml
?xml version="1.0" encoding="GB2312" ?
root
itemWelcome to the world of AJAX(Asynchronous JavaScript And XML)!/item
/root