<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <title>$.ajax()方法發(fā)送請求</title>
 <script type="text/javascript" src="js/jquery-1.4.1.js"></script>
 <style type="text/css">
  body
  {
   font-size: 13px;
  }
  .divFrame
  {
   width: 225px;
   border: solid 1px #666;
  }
  .divFrame .divTitle
  {
   padding: 5px;
   background-color: #eee;
   height: 23px;
  }
  .divFrame .divTitle span
  {
   float: left;
   padding: 2px;
   padding-top: 5px;
  }
  .divFrame .divContent
  {
   padding: 8px;
   text-align: center;
  }
  .divFrame .divContent .clsShow
  {
   font-size: 14px;
   line-height: 2.0em;
  }
  .divFrame .divContent .clsShow .clsError
  {
   font-size: 13px;
   border: solid 1px #cc3300;
   padding: 2px;
   display: none;
   margin-bottom: 5px;
   background-color: #ffe0a3;
  }
  .txt
  {
   border: #666 1px solid;
   padding: 2px;
   width: 150px;
   margin-right: 3px;
  }
  .btn
  {
   border: #666 1px solid;
   padding: 2px;
   width: 50px;
  }
 </style>
 <script type="text/javascript">
  $(function () {
   $("#txtName").focus();//輸入焦點
   $("#txtName").keydown(function (event) {
    if (event.which == "13") {//回車鍵,移動光標(biāo)到密碼框
     $("#txtPass").focus();
    }
   });
   $("#txtPass").keydown(function (event) {
    if (event.which == "13") {//回車鍵，用.ajax提交表單
     $("#btnLogin").trigger("click");
    }
   });
   $("#btnLogin").click(function () { //“登錄”按鈕單擊事件
    //獲取用戶名稱
    var strTxtName = encodeURI($("#txtName").val());
    //獲取輸入密碼
    var strTxtPass = encodeURI($("#txtPass").val());
    //開始發(fā)送數(shù)據(jù)
    $.ajax
    ({ //請求登錄處理頁
     url: "Login.aspx", //登錄處理頁
     dataType: "html",
     //傳送請求數(shù)據(jù)
     data: { txtName: strTxtName, txtPass: strTxtPass },
     success: function (strValue) { //登錄成功后返回的數(shù)據(jù)
      //根據(jù)返回值進(jìn)行狀態(tài)顯示
      if (strValue == "True") {//注意是True,不是true
       $(".clsShow").html("操作提示，登錄成功！" + strValue);
      }
      else {
       $("#divError").show().html("用戶名或密碼錯誤！" + strValue);
      }
     }
    })
   })
  })
 </script>
</head>
<body>
 <form id="frmUserLogin">
 <div class="divFrame">
  <div class="divTitle">
   <span>用戶登錄</span>
  </div>
  <div class="divContent">
   <div class="clsShow">
    <div id="divError" class="clsError">
    </div>
    <div>
     名稱：<input id="txtName" type="text" class="txt" /></div>
    <div>
     密碼：<input id="txtPass" type="password" class="txt" /></div>
    <div>
     <input id="btnLogin" type="button" value="登錄" class="btn" />&nbsp;&nbsp
     <input id="btnReset" type="reset" value="取消" class="btn" />
    </div>
   </div>
  </div>
 </div>
 </form>
</body>
</html>

然后，新建Login.aspx，接收并處理數(shù)據(jù)：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Login.aspx.cs" Inherits="JSDemo.Login" ResponseEncoding="gb2312"%>
<%
 string strName = System.Web.HttpUtility.UrlDecode(Request["txtName"]);
 string strPass = System.Web.HttpUtility.UrlDecode(Request["txtPass"]);
 bool login = false;
 if (strName == "admin" && strPass == "admin")
 {
  login = true;
 }
 Response.Write(login);
%>

補充：form使用AJAX提交完整實例：

//將form轉(zhuǎn)換為AJAX提交
 function ajaxSubmit(url,frm,fn){
  var dataPara=getFormJson(frm);
  $.ajax({
   url:url,
   type:"post",
   data:dataPara,
   async:false,
   dataType:'txt',
   success:fn
  });
 }
 //將form中的值轉(zhuǎn)換為鍵值對
 function getFormJson(frm){
  var o={};
  var a=$(frm).serializeArray();
  $.each(a,function(){
   if(o[this.name]!==undefined){
    if(!o[this.name].push){
     o[this.name]=[o[this.name]];
    }
    o[this.name].push(this.value || '');
   }else{
    o[this.name]=this.value || '';
   }
  });
  return o;
 }
/*
 //前臺調(diào)用方式
 function autoSubmitFun(){
   ajaxSubmit("autoSumitScoreAJAX.action",$('#formId'),function(){});
 }
*/

希望本文所述對大家jQuery程序設(shè)計有所幫助。

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