jQuery中的Ajax實現

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>ddd</title>
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
        <script language="JavaScript" src="../js/jquery-1.4.2.js">
        </script>
        <style type="text/css">
            div, span {
                width: 140px;
                height: 140px;
                margin: 20px;
                background: #9999CC;
                border: #000 1px solid;
                float: left;
                font-size: 17px;
                font-family: Roman;
            }
            
            div.mini {
                width: 30px;
                height: 30px;
                background: #CC66FF;
                border: #000 1px solid;
                font-size: 12px;
                font-family: Roman;
            }
            
            div.visible {
                display: none;
            }
        </style>
        <!--引入jquery的js庫-->
    </head>
    <body>
        <form action="" name="form1" id="form1">
            <input type="text" name="username" id="username" value="zhang">
            <br>
            <input type="text" name="psw" id="psw" value="99999">
            <br>
            <input type="button" id="b1" value="登陸">
        </form>
        <div id="one">
        </div>
		<h1></h1>
    </body>
    <script language="JavaScript">
      	$().ready(function(){
			/*
			 * load(url,[data],[callback]);
			 * 	url:請求的服務器的資源地址
			 *  data:向服務器端發送數據，JSON串格式.如果有此參數，就以POST方式提交數據，沒有就是get方式提交數據
			 *  callback:function(data,textStatus,xhr){}
			 *  		data:服務器端返回的數據
			 *  		textStatus:狀態。succuss, error, notmodify, timeout
			 *  		xhr：XmlHttpRequest對象本身
			 */
			/*$("#b1").click(function(){
				$("#one").load("1.jsp",{username:'gfy'},function(data,textStatus,xhr){
					//alert(data);
					//alert(textStatus);
					//alert(xhr);
				});
			});*/
			$("#b1").click(function(){
					//1.jsp h1,h2 只獲取1.jsp返回的h1、h2標記的內容
				$("#one").load("1.jsp h1,h2",{username:'gfy'},function(data,textStatus,xhr){
					$(":header").html(data);
				});
			});
		});
    </script>
</html>

//jsp文件：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
System.out.println(request.getMethod());
System.out.println(request.getParameter("username"));
out.write("ok");
%>

//第二種：get

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>ddd</title>
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
         <script language="JavaScript" src="../js/jquery-1.4.2.js"></script>
        </script>
        <style type="text/css">
            div, span {
                width: 140px;
                height: 140px;
                margin: 20px;
                background: #9999CC;
                border: #000 1px solid;
                float: left;
                font-size: 17px;
                font-family: Roman;
            }
            
            div.mini {
                width: 30px;
                height: 30px;
                background: #CC66FF;
                border: #000 1px solid;
                font-size: 12px;
                font-family: Roman;
            }
            
            div.visible {
                display: none;
            }
        </style>
        <!--引入jquery的js庫-->
    </head>
    <body>
        <form action="" name="form1" id="form1">
            <input type="text" name="username" id="username" value="zhang">
            <br>
            <input type="text" name="psw" id="psw" value="99999">
            <br>
            <input type="button" id="b1" value="登陸">
        </form>
        <div id="one">
        </div>
    </body>
    <script language="JavaScript">
    	$().ready(function(){
			$("#b1").click(function(){
				/*
				 * $.get(url,data,callback)
				 */
				/*$.post("1.jsp",{username:'gfy',psw:'123'},function(data,textStatus){
					$("#one").text(data);
				});*/
				$.post("1.jsp",$("#form1").serialize(),function(data,textStatus){
					$("#one").text(data);
				});
			});
			
		});
    </script>
</html>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>ddd</title>
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
        <script language="JavaScript" src="../js/jquery-1.4.2.js">
        </script>
        <style type="text/css">
            div, span {
                width: 140px;
                height: 140px;
                margin: 20px;
                background: #9999CC;
                border: #000 1px solid;
                float: left;
                font-size: 17px;
                font-family: Roman;
            }
            
            div.mini {
                width: 30px;
                height: 30px;
                background: #CC66FF;
                border: #000 1px solid;
                font-size: 12px;
                font-family: Roman;
            }
            
            div.visible {
                display: none;
            }
        </style>
        <!--引入jquery的js庫-->
    </head>
    <body>
        <form action="" name="form1" id="form1">
            <input type="text" name="username" id="username" value="zhang">
            <br>
            <input type="text" name="psw" id="psw" value="99999">
            <br>
            <input type="button" id="b1" value="登陸">
        </form>
        <div id="one">
        </div>
		<h1></h1>
    </body>
    <script language="JavaScript">
      	$().ready(function(){
			/*
			 * load(url,[data],[callback]);
			 * 	url:請求的服務器的資源地址
			 *  data:向服務器端發送數據，JSON串格式.如果有此參數，就以POST方式提交數據，沒有就是get方式提交數據
			 *  callback:function(data,textStatus,xhr){}
			 *  		data:服務器端返回的數據
			 *  		textStatus:狀態。succuss, error, notmodify, timeout
			 *  		xhr：XmlHttpRequest對象本身
			 */
			/*$("#b1").click(function(){
				$("#one").load("1.jsp",{username:'gfy'},function(data,textStatus,xhr){
					//alert(data);
					//alert(textStatus);
					//alert(xhr);
				});
			});*/
			$("#b1").click(function(){
					//1.jsp h1,h2 只獲取1.jsp返回的h1、h2標記的內容
				$("#one").load("1.jsp h1,h2",{username:'gfy'},function(data,textStatus,xhr){
					$(":header").html(data);
				});
			});
		});
    </script>
</html>

//jsp文件：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
System.out.println(request.getMethod());
System.out.println(request.getParameter("username"));
out.write("ok");
%>

//第二種：get

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>ddd</title>
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
         <script language="JavaScript" src="../js/jquery-1.4.2.js"></script>
        </script>
        <style type="text/css">
            div, span {
                width: 140px;
                height: 140px;
                margin: 20px;
                background: #9999CC;
                border: #000 1px solid;
                float: left;
                font-size: 17px;
                font-family: Roman;
            }
            
            div.mini {
                width: 30px;
                height: 30px;
                background: #CC66FF;
                border: #000 1px solid;
                font-size: 12px;
                font-family: Roman;
            }
            
            div.visible {
                display: none;
            }
        </style>
        <!--引入jquery的js庫-->
    </head>
    <body>
        <form action="" name="form1" id="form1">
            <input type="text" name="username" id="username" value="zhang">
            <br>
            <input type="text" name="psw" id="psw" value="99999">
            <br>
            <input type="button" id="b1" value="登陸">
        </form>
        <div id="one">
        </div>
    </body>
    <script language="JavaScript">
    	$().ready(function(){
			$("#b1").click(function(){
				/*
				 * $.get(url,data,callback)
				 */
				/*$.post("1.jsp",{username:'gfy',psw:'123'},function(data,textStatus){
					$("#one").text(data);
				});*/
				$.post("1.jsp",$("#form1").serialize(),function(data,textStatus){
					$("#one").text(data);
				});
			});
			
		});
    </script>
</html>

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