简单的rss阅读器
2006-08-20 01:00 cppguy 阅读(402) 评论(0) 编辑 收藏 举报
这是基于ajax的简单的rss读取程序,有基于web的无刷新特点
<!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>RSS Reader</title>
<script type="text/javascript">
var xmlHttp;
function showRSS(){
var target=document.getElementById("targeturl");
readRSS(target.value);
}
function createXMLHttpReques()
{
if(window.ActiiveXObject)
{
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) {
clearPreviousResults();
parseResults();
}
}
}
function clearPreviousResults() {
var ListBody = document.getElementById("resultsTitle");
while(ListBody.childNodes.length > 0) {
ListBody.removeChild(ListBody.childNodes[0]);
}
}
function parseResults() {
var results = xmlHttp.responseXML;
var title = null;
var content=null;
var item = null;
var items = results.getElementsByTagName("item");
for(var i = 0; i < items.length; i++) {
item = items[i];
title = item.getElementsByTagName("title")[0].firstChild.nodeValue;
content=item.getElementsByTagName("description")[0].firstChild.nodeValue;
addListRow(title,content);
}
}
function addListRow(title,content) {
var row = document.createElement("ul");
var cell = createCellWithText(title);
var contentcell=createCellWithContent(content);
row.appendChild(cell);
row.appendChild(contentcell);
document.getElementById("resultsTitle").appendChild(row);
}
function createCellWithText(text) {
var cell = document.createElement("li");
var textNode = document.createTextNode(text);
cell.appendChild(textNode);
return cell;
}
function createCellWithContent(content) {
var cell=document.createElement("h1")
var textNode = document.createTextNode(content);
cell.appendChild(textNode);
return cell;
}
</script>
</head>
<body>
<h2>Blog文章列表</h2>
<input type="text" id="targeturl" name="textfield" />
<input type="button" value="搜索" onclick="ShowRSS();"/>
<div id="resultsTitle">
</div>
</body>
</html>
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>RSS Reader</title>
<script type="text/javascript">
var xmlHttp;
function showRSS(){
var target=document.getElementById("targeturl");
readRSS(target.value);
}
function createXMLHttpReques()
{
if(window.ActiiveXObject)
{
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) {
clearPreviousResults();
parseResults();
}
}
}
function clearPreviousResults() {
var ListBody = document.getElementById("resultsTitle");
while(ListBody.childNodes.length > 0) {
ListBody.removeChild(ListBody.childNodes[0]);
}
}
function parseResults() {
var results = xmlHttp.responseXML;
var title = null;
var content=null;
var item = null;
var items = results.getElementsByTagName("item");
for(var i = 0; i < items.length; i++) {
item = items[i];
title = item.getElementsByTagName("title")[0].firstChild.nodeValue;
content=item.getElementsByTagName("description")[0].firstChild.nodeValue;
addListRow(title,content);
}
}
function addListRow(title,content) {
var row = document.createElement("ul");
var cell = createCellWithText(title);
var contentcell=createCellWithContent(content);
row.appendChild(cell);
row.appendChild(contentcell);
document.getElementById("resultsTitle").appendChild(row);
}
function createCellWithText(text) {
var cell = document.createElement("li");
var textNode = document.createTextNode(text);
cell.appendChild(textNode);
return cell;
}
function createCellWithContent(content) {
var cell=document.createElement("h1")
var textNode = document.createTextNode(content);
cell.appendChild(textNode);
return cell;
}
</script>
</head>
<body>
<h2>Blog文章列表</h2>
<input type="text" id="targeturl" name="textfield" />
<input type="button" value="搜索" onclick="ShowRSS();"/>
<div id="resultsTitle">
</div>
</body>
</html>