一段用ajax读取rss的代码

[小叶]

来自drl

PHP 代码:

<script type="text/javascript">
var xmlHttp;
function createXMLHttpRequest()
{
   if(window.ActiveXObject)
   {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
   }
   else if(window.XMLHttpRequest)
   {
      xmlHttp=new XMLHttpRequest();
   }
}


function startRequset()
{
   createXMLHttpRequest();
   xmlHttp.onreadystatechange=handleStateChange;
   xmlHttp.open("get",document.getElementById("url").value,true);
   xmlHttp.send(null);
}


function handleStateChange()
{
   if(xmlHttp.readyState==4)
   {
      if(xmlHttp.status==200)
          {
             document.getElementById("Item4").innerHTML=LoadRSS(xmlHttp.responseXML,5);
          }
   }
}

function LoadRSS(RssUrl,ShowNewNum)
{
            var xmlDoc = new ActiveXObject("Msxml2.DOMDocument.3.0");
                        var title,link;
                        var strTemp;
                        
                        xmlDoc.async = false;
                        xmlDoc.load(RssUrl);
                        if (xmlDoc.parseError.errorCode != 0) {
                        var myErr = xmlDoc.parseError;
                        return "读取数据发生错误！";}
                        else
                        {
                           title=xmlDoc.selectSingleNode("//rss/channel/title"); 
                           link=xmlDoc.selectSingleNode("//rss/channel/link");
                           strTemp="<table><tr><td><a href='"+link.text+"' target='_blank'>"+title.text+"</a></td></tr>"
                           var channel;
                           var strtitle,strlink;
                           channel=xmlDoc.getElementsByTagName("item");
                           for(var i=0;i<ShowNewNum;i++)
                           {
                           //var Iitem=channel;
                           strtitle=channel[i].getElementsByTagName('title'); 
                           strlink= channel[i].getElementsByTagName('link'); 
                           strTemp+="<tr><td><a href='"+strlink.item(0).text+"' target='_blank'>"+strtitle.item(0).text+"</a></td></tr>";
                           //strTemp+="<tr><td>"+strtitle.item(0).text+"</td></tr>"
                           }
                           strTemp+="</table>";
                           return strTemp;
                        }
}

</script>
 
HTML代码:


<form action="#">
  <label>
<input name="url" type="text" id="url" />
<input name="button" type="button" onclick="startRequset();" value="获得RSS"/>
  </label>
<div  id="Item4" >读取数据中...</div>
</form> 


[azha]

需要点击按钮才读取rss，如果能改成直接显示就好了