用实现ajax读博客rss示例代码-巨人网络通讯

<!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>"+headtitle+"</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=""+title+"";        document.getElementById("result").appendChild(cell);     } } function readrss1() {     var url=document.getElementById("txturl").value;     if(url=="")     {         alert("请输入RSS地址");         }     else         {             readRSS(url);             }     } </script> </head> <body">   <h1>ajax读rss示例</h1>   <form >          blogjava原创区 nbsp         blogjava新手区  nbsp      blogjava非技术区  nbsp       综合区             输入一个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>

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