标签：div tor open var com The lse internet syn
1.XMLHttpRequest对象
创建XMLHttpRequest对象
xmlhttp=new XMLHttpRequest();
##老版本的 Internet Explorer （IE5 和 IE6）使用 ActiveX 对象：
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
例子：
<html>
<head>
<script type="text/javascript">
var xmlhttp;
function loadXMLDoc(url)
{
xmlhttp=null;
if (window.XMLHttpRequest)
{// code for IE7, Firefox, Opera, etc.
xmlhttp=new XMLHttpRequest();
}
else if (window.ActiveXObject)
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp!=null)
{
xmlhttp.onreadystatechange=state_Change;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}
else
{
alert("Your browser does not support XMLHTTP.");
}
}
function state_Change()
{
if (xmlhttp.readyState==4)
{// 4 = "loaded"
if (xmlhttp.status==200)
{// 200 = "OK"
document.getElementById(‘A1‘).innerHTML=xmlhttp.status;
document.getElementById(‘A2‘).innerHTML=xmlhttp.statusText;
document.getElementById(‘A3‘).innerHTML=xmlhttp.responseText;
}
else
{
alert("Problem retrieving XML data:" + xmlhttp.statusText);
}
}
}
</script>
</head>
<body>
<h2>Using the HttpRequest Object</h2>
<p><b>Status:</b>
<span id="A1"></span>
</p>
<p><b>Status text:</b>
<span id="A2"></span>
</p>
<p><b>Response:</b>
<br /><span id="A3"></span>
</p>
<button onclick="loadXMLDoc(‘http://www.w3school.com.cn/example/xdom/note.xml‘)">Get XML</button>
</body>
</html>
2.解析xml字符串
Internet Explorer 使用 loadXML() 方法来解析 XML 字符串，而其他浏览器使用 DOMParser 对象。
txt="<bookstore><book>";
txt=txt+"<title>Everyday Italian</title>";
txt=txt+"<author>Giada De Laurentiis</author>";
txt=txt+"<year>2005</year>";
txt=txt+"</book></bookstore>";
if (window.DOMParser)
{
parser=new DOMParser();
xmlDoc=parser.parseFromString(txt,"text/xml");
}
else // Internet Explorer
{
xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
xmlDoc.loadXML(txt);
}
3.xml DOM
a.解析xml文件
<html>
<body>
<h1>W3School.com.cn Internal Note</h1>
<p>
<b>To:</b> <span id="to"></span><br />
<b>From:</b> <span id="from"></span><br />
<b>Message:</b> <span id="message"></span>
</p>
<script type="text/javascript">
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","/example/xmle/note.xml",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;
document.getElementById("to").innerHTML=
xmlDoc.getElementsByTagName("to")[0].childNodes[0].nodeValue;
document.getElementById("from").innerHTML=
xmlDoc.getElementsByTagName("from")[0].childNodes[0].nodeValue;
document.getElementById("message").innerHTML=
xmlDoc.getElementsByTagName("body")[0].childNodes[0].nodeValue;
</script>
</body>
</html>
b.解析xml字符串
<html>
<body>
<h1>W3School.com.cn Internal Note</h1>
<p>
<b>To:</b> <span id="to"></span><br />
<b>From:</b> <span id="from"></span><br />
<b>Message:</b> <span id="message"></span>
</p>
<script>
txt="<note>";
txt=txt+"<to>George</to>";
txt=txt+"<from>John</from>";
txt=txt+"<heading>Reminder</heading>";
txt=txt+"<body>Don‘t forget the meeting!</body>";
txt=txt+"</note>";
if (window.DOMParser)
{
parser=new DOMParser();
xmlDoc=parser.parseFromString(txt,"text/xml");
}
else // Internet Explorer
{
xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
xmlDoc.loadXML(txt);
}
document.getElementById("to").innerHTML=xmlDoc.getElementsByTagName("to")[0].childNodes[0].nodeValue;
document.getElementById("from").innerHTML=xmlDoc.getElementsByTagName("from")[0].childNodes[0].nodeValue;
document.getElementById("message").innerHTML=xmlDoc.getElementsByTagName("body")[0].childNodes[0].nodeValue;
</script>
</body>
</html>
标签：div tor open var com The lse internet syn
原文地址：https://www.cnblogs.com/konglingxi/p/9578714.html
