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用ajax实现读博客rss示例代码

2022-2-5 16:57| 发布者: 菜鸟教程小白| 查看: 126| 评论: 0|原作者: [db:作者]|来自: [db:来源]

摘要: 这篇文章主要介绍了用ajax实现读博客rss的具体实现，需要的朋友可以参考下

 
<!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("请输入RSS地址"); 
} 
else 
{ 
readRSS(url); 
} 
} 

</script> 
</head> 

<body"> 
<h1>ajax读rss示例</h1> 
<form > 

<a href="javascript:readRSS('http://www.blogjava.net/rss.aspx')">blogjava原创区 </a> 
<a href="javascript:readRSS('http://beginner.blogjava.net/rss.aspx')">blogjava新手区 </a> 
<a href="javascript:readRSS('http://life.blogjava.net/rss.aspx')">blogjava非技术区 </a> 
<a href="javascript:readRSS('http://general.blogjava.net/rss.aspx')">综合区 </a> 


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> 