jQuery读取分析xml文件步骤详解

<?xml version="1.0"?>
<data>
 <page tasks="1" messages="3" notifications="3"/>
</data>

$(document).ready(function() {
 function get_info() {
 $.ajax({
 type: "GET",
 url: "page.xml",
 dataType: "xml",
 cache: false,
 complete: function(doc) {
 var tasks = $(doc.responseText).find("page").attr("tasks");
 var msgs = $(doc.responseText).find("page").attr("messages");
 var notes = $(doc.responseText).find("page").attr("notifications");
 if (tasks != $('#tasks').text() ||
 msgs != $('#messages').text() ||
 notes != $('#notifications').text()) {
 document.title = "Facebook" + ' NEW NOTIFICATON';
 }
 $('#tasks').text(tasks);
 $('#messages').text(msgs);
 $('#notifications').text(notes);
 }
 });
 }
 setInterval(function() {
 get_info();
 }, 5000);
});