AJAX XML 实例

浏览数：37 / 时间：2015年06月09日

AJAX XML 实例

下面的例子将演示网页如何使用 AJAX 来读取来自 XML 文件的信息

<!DOCTYPE html>
<html>
<head>
<script>
function loadXMLDoc(url)
{
var xmlhttp;
var txt,x,xx,i;
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    txt="<table border=‘1‘><tr><th>Title</th><th>Artist</th><th>Price</th></tr>";
    x=xmlhttp.responseXML.documentElement.getElementsByTagName("CD");
    for (i=0;i<x.length;i++)
      {
      txt=txt + "<tr>";
      xx=x[i].getElementsByTagName("TITLE");
        {
        try
          {
          txt=txt + "<td>" + xx[0].firstChild.nodeValue + "</td>";
          }
        catch (er)
          {
          txt=txt + "<td>&nbsp;</td>";
          }
        }
      xx=x[i].getElementsByTagName("ARTIST");
        {
        try
          {
          txt=txt + "<td>" + xx[0].firstChild.nodeValue + "</td>";
          }
        catch (er)
          {
          txt=txt + "<td>&nbsp;</td>";
          }
        }


      xx=x[i].getElementsByTagName("PRICE");
       {
       try{
           txt = txt + "<td>" + xx[0].firstChild.nodeValue+"</td>";
          }
         catch(er){
             txt = txt+"<td>&nbsp;<td>";
         }
      }

     

      txt=txt + "</tr>";
      }
    txt=txt + "</table>";
    document.getElementById(‘txtCDInfo‘).innerHTML=txt;
    }
  }
xmlhttp.open("GET",url,true);
xmlhttp.send();
}
</script>
</head>

<body>
       <button onclick="loadXMLDoc(‘cd_catalog.xml‘)">Get CD info</button>
       <div id="txtCDInfo"></div>
</body>
</html>