在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<body>
<script>
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","books.xml",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML; 

txt=xmlDoc.getElementsByTagName("title")[0].childNodes[0].nodeValue;
document.write(txt);
</script>
</body>
</html>

源代码

动行结果