用ajax實現(xiàn)讀博客rss示例代碼

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
html xmlns="http://www.w3.org/1999/xhtml">
head>
title>this is test/title>

script type="text/javascript">
var xmlHttp;

function createXMLHttpRequest() {
if (window.ActiveXObject) {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if (window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
}
}

function readRSS(url) {
createXMLHttpRequest();
xmlHttp.onreadystatechange = handleStateChange;
xmlHttp.open("GET", url, true);
xmlHttp.send(null);


}

function handleStateChange() {
if(xmlHttp.readyState == 4) {
if(xmlHttp.status == 200) {
ResultSet();
}
}
}

function ResultSet() {
var results = xmlHttp.responseXML;
var title = null;
var item = null;
var link=null;
//得到channel
var ccc=results.getElementsByTagName("channel");
var headtitle=ccc[0].getElementsByTagName("title")[0].firstChild.nodeValue;
var headlink=ccc[0].getElementsByTagName("link")[0].firstChild.nodeValue;
var cell = document.createElement("div");
cell.innerHTML="h1>a href="+headlink+" target=_blank>"+headtitle+"/a>/h1>
";
document.getElementById("result").appendChild(cell);
//得到items
var items = results.getElementsByTagName("item");
for(var i = 0; i items.length; i++) {
item = items[i];
link=item.getElementsByTagName("link")[0].firstChild.nodeValue;
title = item.getElementsByTagName("title")[0].firstChild.nodeValue;
var cell = document.createElement("div");
cell.innerHTML="a href="+link+" target=_blank>"+title+"/a>
";
document.getElementById("result").appendChild(cell);
}

}
function readrss1()
{
var url=document.getElementById("txturl").value;
if(url=="")
{
alert("請輸入RSS地址");
}
else
{
readRSS(url);
}
}

/script>
/head>

body">
h1>ajax讀rss示例/h1>
form >

a href="javascript:readRSS('http://www.blogjava.net/rss.aspx')">blogjava原創(chuàng)區(qū) /a>
a href="javascript:readRSS('http://beginner.blogjava.net/rss.aspx')">blogjava新手區(qū) /a>
a href="javascript:readRSS('http://life.blogjava.net/rss.aspx')">blogjava非技術區(qū) /a>
a href="javascript:readRSS('http://general.blogjava.net/rss.aspx')">綜合區(qū) /a>


輸入一個RSS地址:input type="text" value="http://www.blogjava.net/wujun/rss.aspx" size=50 id="txturl">
input type="button" value="查 看" onclick="readrss1()">

/form>
div id="result">/div>
/body>
/html>