本文实例讲述了jQuery实现form表单基于ajax无刷新提交方法。分享给大家供大家参考,具体如下:
首先,新建Login.html页面:
<!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="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();//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" />
<input id="btnReset" type="reset" value="取消" class="btn" />
</div>
</div>
</div>
</div>
</form>
</body>
</html>
然后,新建Login.aspx,接收并处理数据:
<%@ 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);
%>
补充:form使用AJAX提交完整实例:
//将form转换为AJAX提交
function ajaxSubmit(url,frm,fn){
var dataPara=getFormJson(frm);
$.ajax({
url:url,
type:"post",
data:dataPara,
async:false,
dataType:'txt',
success:fn
});
}
//将form中的值转换为键值对
function getFormJson(frm){
var o={};
var a=$(frm).serializeArray();
$.each(a,function(){
if(o[this.name]!==undefined){
if(!o[this.name].push){
o[this.name]=[o[this.name]];
}
o[this.name].push(this.value || '');
}else{
o[this.name]=this.value || '';
}
});
return o;
}
/*
//前台调用方式
function autoSubmitFun(){
ajaxSubmit("autoSumitScoreAJAX.action",$('#formId'),function(){});
}
*/