ajax读rss示例
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>this is test</title>
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<script type="text/javascript">
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var xmlHttp;
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function createXMLHttpRequest() {
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if (window.ActiveXObject) {
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xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
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}
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else if (window.XMLHttpRequest) {
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xmlHttp = new XMLHttpRequest();
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}
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}
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function readRSS(url) {
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createXMLHttpRequest();
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xmlHttp.onreadystatechange = handleStateChange;
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xmlHttp.open("GET", url, true);
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xmlHttp.send(null);
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}
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function handleStateChange() {
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if(xmlHttp.readyState == 4) {
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if(xmlHttp.status == 200) {
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ResultSet();
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}
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}
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}
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function ResultSet() {
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var results = xmlHttp.responseXML;
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var title = null;
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var item = null;
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var link=null;
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//得到channel
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var ccc=results.getElementsByTagName("channel");
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var headtitle=ccc[0].getElementsByTagName("title")[0].firstChild.nodeValue;
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var headlink=ccc[0].getElementsByTagName("link")[0].firstChild.nodeValue;
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var cell = document.createElement("div");
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cell.innerHTML="<h1><a href="+headlink+" target=_blank>"+headtitle+"</a></h1><br>";
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document.getElementById("result").appendChild(cell);
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//得到items
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var items = results.getElementsByTagName("item");
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for(var i = 0; i < items.length; i++) {
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item = items[i];
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link=item.getElementsByTagName("link")[0].firstChild.nodeValue;
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title = item.getElementsByTagName("title")[0].firstChild.nodeValue;
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var cell = document.createElement("div");
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cell.innerHTML="<a href="+link+" target=_blank>"+title+"</a><br>";
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document.getElementById("result").appendChild(cell);
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}
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}
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function readrss1()
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{
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var url=document.getElementById("txturl").value;
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if(url=="")
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{
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alert("请输入RSS地址");
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}
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else
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{
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readRSS(url);
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}
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}
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</script>
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</head>
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<body">
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<h1>ajax读rss示例</h1>
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<form >
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<a href="javascript:readRSS('http://www.blogjava.net/rss.aspx')">blogjava原创区 </a> 
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<a href="javascript:readRSS('http://beginner.blogjava.net/rss.aspx')">blogjava新手区 </a>  
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<a href="javascript:readRSS('http://life.blogjava.net/rss.aspx')">blogjava非技术区 </a>  
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<a href="javascript:readRSS('http://general.blogjava.net/rss.aspx')">综合区 </a>
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<br>
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输入一个RSS地址:<input type="text" value="http://www.blogjava.net/wujun/rss.aspx" size=50 id="txturl">
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<input type="button" value="查 看" onclick="readrss1()">
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</form>
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<div id="result"></div>
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</body>
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</html>
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