javascript写的ajax请求 

 1 <html xmlns="http://www.w3.org/1999/xhtml">
 2 <head runat="server">
 3 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
 4     <title></title>
 5     <script type="text/javascript">
 6         onload = function () {
 7             window.document.getElementById("Button1").onclick = function () {
 8                 var xhr = null
 9                 if (XMLHttpRequest) {
10                     xhr = new XMLHttpRequest();
11                 } else {
12                     xhr = new ActiveXObject("Microsoft.XMLHTTP");//兼容IE6，IE5
13                 }
14                 xhr.open("get", "Handler2.ashx?a=bbb",true);
15                 xhr.send();
16                 xhr.onreadystatechange = function () {//回调函数
17                     if(xhr.readyState==4){
18                         if (xhr.status == 200) {
19                             alert(xhr.responseText);
20                         }
21                     }
22                 };
23 
24             }
25             
26         };
27 
28     </script>
29 </head>
30 <body>
31     <form id="form1" runat="server">
32     <div>
33     
34         <asp:Button ID="Button1" runat="server" Text="Button" />
35     
36     </div>
37     </form>
38 </body>
39 </html>

 

posted @ 2015-11-12 22:48  caichao  阅读(381)  评论(0)    收藏  举报