ajax返回值

浏览数：30 / 时间：2015年06月09日

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 2 <html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
 3 <head>
 4 <title>新建网页</title>
 5 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 6 <meta name="description" content="" />
 7 <meta name="keywords" content="" />
 8 <script type="text/javascript">
 9 
10 function createXHR() {
11     var xhr = null;
12     if(window.XMLHttpRequest) {
13         xhr = new XMLHttpRequest();
14     } else if(window.ActiveXObject) {
15         xhr = new ActiveXObject(‘Microsoft.XMLHTTP‘);
16     }
17     return xhr;
18 }
19 
20 
21 function test1() {
22     var xhr = createXHR();
23     xhr.open(‘GET‘,‘08-returntype.html‘,true);
24 
25     xhr.onreadystatechange = function() {
26         if(this.readyState == 4) {
27             //alert(this.responseXML);
28             var xmldom = this.responseXML;
29             var chs = xmldom.getElementsByTagName(‘book‘)[0];
30             document.getElementById(‘btitle‘).value = chs.firstChild.firstChild.wholeText;
31             document.getElementById(‘bintro‘).value = chs.lastChild.firstChild.wholeText;
32         }
33     }
34 
35     xhr.send(null);
36 }
37 
38 
39 function test2() {
40     var xhr = createXHR();
41     xhr.open(‘GET‘,‘08-returnhtml.php‘,true);
42 
43     xhr.onreadystatechange = function() {
44         if(this.readyState == 4) {
45             document.getElementById(‘news‘).innerHTML = this.responseText;
46         }
47     }
48 
49     xhr.send(null);
50 }
51 
52 
53 function test3() {
54     var xhr = createXHR();
55     xhr.open(‘GET‘,‘08-returnjson.php‘,true);
56 
57     xhr.onreadystatechange = function() {
58         if(this.readyState == 4) {           
59             var book = eval(‘(‘+this.responseText+‘)‘);
60             document.getElementById(‘btitle‘).value = book.title;
61             document.getElementById(‘bintro‘).value = book.intro;
62 
63         }
64     }
65 
66     xhr.send(null);
67 }
68 
69 
70 </script>
71 
72 <style type="text/css">
73 </style>
74 </head>
75     <body>
76         书名:<input type="text" id="btitle" /><br />
77         简介:<input type="text" id="bintro" /><br />
78 
79         <input type="button" value="测试返回XML" onclick="test1();" />
80         <input type="button" value="测试返回html代码" onclick="test2();" />
81         <input type="button" value="测试返回json格式" onclick="test3();" />
82 
83         <div id="news">
84         </div>
85     </body>
86 </html>