jquery-ajax简单示例

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//---------前台代码------

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'jqueryajax_demo02.jsp' starting page</title>    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
	<script type="text/javascript" src="scripts/jquery-1.7.1.js"></script>
	<script type="text/javascript">
	 $(document).ready(	 
	 function(){
	 $('#message').hide() ;
	  $('#isubmit').click(function(){
	  var uname=document.getElementById("uname").value;
	  var data="uname="+uname;
	  // alert(uname) ;
	  $.ajax({
	  type:"post",
	  url:"resonseajax.jsp",
	  data:data,// 此处是ajax传递的参数
	  success:function(html){ //回调函数
	  $('#message').show() ;
	  $('#message').text(html) ;
	  }
	  });
	  });
	 });
	</script>
  </head>  
  <body>
    <table>
     <tr>
     <td><input type="text" name="uname" id="uname" /></td>
     <td><input type="submit" value="提交" id="isubmit"></td>
     <td><span id="message"></span></td>
     </tr>
    </table>
</html>

//-------------后台代码---------------

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<% 
String uname = request.getParameter("uname") ;
System.out.println(uname) ;
out.println("welcome"+uname) ;
%>

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