后台管理中总是使用frameset进行分成部分进行管理,但是感觉很不好用,尤其是页面间调转还要判断window.parent,太令我费神了,于是学习使用XMLHttpRequest进行页面局部刷新。代码如下:
Java代码  
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- <html>  
-     <head>  
-         <script type="text/javascript">   
-             window.onload = function(){   
-             document.getElementById("email").onblur = function(){   
-                 if(window.XMLHttpRequest){   
-                     http_request = new XMLHttpRequest();   
-                     if(http_request.overrideMimeType){  
-                     http_request.overrideMimeType("text/xml");   
-                     }   
-                 }else if(window.ActiveXObject){   
-                     try{   
-                         http_request = new ActiveXObject("Msxml2.XMLHTTP");   
-                     }catch(e){   
-                         try{      
-                             http_request = new ActiveXObject("Microsoft.XMLHTTP");   
-                         }catch(e){}   
-                     }   
-                 }   
-                 if(!http_request){   
-                     window.alert("不能创建XMLHttpRequest对象实例!");   
-                     return false;   
-                 }   
-                 http_request.onreadystatechange = function(){   
-                     if(http_request.readyState == 4 &&   
-                         http_request.status == 200) {   
-                         document.getElementById("emailTip").innerHTML   
-                         =http_request.responseText;   
-                     }   
-                 };   
-                 http_request.open("GET", "email.jsp?email="+this.value, true);   
-                 http_request.send(null);   
-                 }   
-             }   
-   </script>  
-     </head>  
-     <body>  
-         <input type="button" value="修改" onclick="getOtherMessage();" />  
-         <input type="text" id="email" />  
-         <span id="emailTip"></span>  
-         <div id="view">  
-             456  
-         </div>  
-     </body>  
- </html>  
 
后经高手提醒,可以使用ajax技术来写,使用jquery很简单,示例如下:
Java代码  
 
- <html>  
-     <head>  
-         <script type="text/javascript" src="js/jquery.js"></script>  
-         <script type="text/javascript">   
-         function getOtherMessage(){   
-             $.ajax({   
-                 type:"post",     
-                 url:"${pageContext.request.contextPath}/getOtherMessage.do",   
-                 success:function(msg){   
-                     $("#view").html(msg);   
-                 },   
-                 error:function(){   
-                     alert("wrong");   
-                 }   
-             });   
-        }   
-   </script>  
-     </head>  
-     <body>  
-         <input type="button" value="修改" onclick="getOtherMessage();" />  
-         <div id="view">  
-             456  
-         </div>  
-     </body>  
- </html>