jQuery uses $.ajax to submit a form complete example

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jQuery uses $.ajax to submit a form complete example_jquery

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May 16, 2016 pm 03:26 PM

jquery

The example in this article describes how jQuery uses $.ajax to submit a form. Share it with everyone for your reference, the details are as follows:

First, create a new Login.html page:

<!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()方法发送请求</title>
 <script type="text/javascript" src="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();//输入焦点
   $("#txtName").keydown(function (event) {
    if (event.which == "13") {//回车键,移动光标到密码框
     $("#txtPass").focus();
    }
   });
   $("#txtPass").keydown(function (event) {
    if (event.which == "13") {//回车键，用.ajax提交表单
     $("#btnLogin").trigger("click");
    }
   });
   $("#btnLogin").click(function () { //“登录”按钮单击事件
    //获取用户名称
    var strTxtName = encodeURI($("#txtName").val());
    //获取输入密码
    var strTxtPass = encodeURI($("#txtPass").val());
    //开始发送数据
    $.ajax
    ({ //请求登录处理页
     url: "Login.aspx", //登录处理页
     dataType: "html",
     //传送请求数据
     data: { txtName: strTxtName, txtPass: strTxtPass },
     success: function (strValue) { //登录成功后返回的数据
      //根据返回值进行状态显示
      if (strValue == "True") {//注意是True,不是true
       $(".clsShow").html("操作提示，登录成功！" + strValue);
      }
      else {
       $("#divError").show().html("用户名或密码错误！" + strValue);
      }
     }
    })
   })
  })
 </script>
</head>
<body>
 <form id="frmUserLogin">
 <div class="divFrame">
  <div class="divTitle">
   <span>用户登录</span>
  </div>
  <div class="divContent">
   <div class="clsShow">
    <div id="divError" class="clsError">
    </div>
    <div>
     名称：<input id="txtName" type="text" class="txt" /></div>
    <div>
     密码：<input id="txtPass" type="password" class="txt" /></div>
    <div>
     <input id="btnLogin" type="button" value="登录" class="btn" /> &nbsp
     <input id="btnReset" type="reset" value="取消" class="btn" />
    </div>
   </div>
  </div>
 </div>
 </form>
</body>
</html>

Then, create a new Login.aspx to receive and process the data:

<%@ 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);
%>

I hope this article will be helpful to everyone in jQuery programming.

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