IE初始

 1 <!DOCTYPE html>
 2 <html>
 3 <head lang="en">
 4     <meta charset="UTF-8">
 5     <title></title>
 6     <script>
 7         function loadXML(){
 8             var xmlhttp;
 9             if(window.XMLHttpRequest){
10                 //  IE7+, Firefox, Chrome, Opera, Safari 浏览器执行代码
11                 xmlhttp=new XMLHttpRequest();
12             }
13             else{
14                 // IE6, IE5 浏览器执行代码
15                 xmlhttp=ActiveXObject("Microsoft.XMLHTTP");
16             }
17             xmlhttp.onreadystatechange=function(){
18                 if(xmlhttp.readyState==4&&xmlhttp.status==200){
19                     document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
20                 }
21             }
22             xmlhttp.open("GET","fg.txt",true);
23             xmlhttp.send();
24         }
25     </script>
26 <body>
27   <div id="myDiv">
28     使用ajax修改该文本内容
29   </div>
30 <button type="button" onclick="loadXML()">点击修改</button>
31 </body>
32 </html>