AJAX教程(14)：通过XMLHTTP加载XML文件

通过XMLHTTP加载XML文件：

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
h2Using the HttpRequest Object/h2

pbStatus:/b
span id="A1"/span
/p

pbStatus text:/b
span id="A2"/span
/p

pbResponse:/b
br /span id="A3"/span
/p

button onclick="loadXMLDoc('/example/xmle/note.xml')"Get XML/button

/body
/html