jquery ajax 예제의 반환 값에 대한 자세한 설명

$.get("test.jsp", 
{ name: "cssrain", time: "2008/01/21" }, //要传递的数据 
function(data){ 
alert("返回的数据: " + data); 
} 
)

$.post("test.jsp", 
{ name: "cssrain", time: "2008/01/21" }, //要传递的数据 
function(data){ 
alert("返回的数据: " + data); 
} 
)

$.ajax({ 
url:'Accept.jsp', 
type:'post', //数据发送方式 
dataType:'html', //接受数据格式 (这里有很多,常用的有html,xml,js,json) 
data:'text='+$("#name").val()+'&date='+new Date(), //要传递的数据 
error: function(){ //失败 
alert('Error loading 
document
'); 
}, 
success: function(msg){ //成功 
alert( "Data Saved: " + msg ); 
} 
});

<span id="i<%=id%>"><%=vote_number%></span><br/> 
<a 
onclick
=myvote(<%=id%>); href=&#39;
javascript
:;&#39;">投票</a>

function myvote(id){ 
$.post("vote.jsp", { id: id }, 
function(data){ 
eval("var data="+data); 
if (data.issucc=="0"){ 
alert(data.mess) 
}else{ 
//alert("
更新
页面"); 
$("#i"+data.myid).html(data.votenum); 
} 
}); 
}

var userName; 
var password; 
var result; 
$(document).ready(function(){ 
$("#load").hide(); 
$("#success").hide(); 
$("#error").hide(); 
}); 
$(document).ready(function(){ 
$("#button").click(function(){ 
$("#error").hide(); 
$("#load").show("slow"); 
userName = $("#userName").val(); 
password = $("#password").val(); 
$.ajax({type: "post", 
url: "login.jsp", 
dataType: "html", 
data: "userName="+userName+"&password="+password, 
success: function(result){ 
var res = String($.trim(result)); 
if(res=="OK"){ 
$("#myTable").hide("slow"); 
$("#success").show("slow"); 
}else if(res=="error"){ 
$("#error").show("slow"); 
$("#load").hide("slow"); 
}else{ 
alert("返回异常");} 
} 
}); 
}); 
});

<%@ page language="java" pageEncoding="gb2312"%> 
<% 
String userName = request.getParameter("userName"); 
String password = request.getParameter("password"); 
if(password.equals("longleg")&&userName.equals("thy")){ 
out.print("OK"); 
}else{out.print("error");} 
%>