主要是登录注册功能，前端后台验证没有什么，这个大家可以自己加上去，比如过滤啊，正则啊等
还是先放图吧
这是登录及注册界面 点击注册切换到注册界面，点击登录切换到登录界面
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="js/jquery.js" type="text/javascript" charset="utf-8"></script>
<style type="text/css">
body,html{
padding: 0px;
margin: 0px;
}
.header {
width: 100%;
padding: 0px;
margin: 0px;
background-color: #699C03;
}
.header-nav {
min-width: 1170px;
height: 50px;
line-height: 50px;
}
.header-nav-left {
float: left;
padding-left: 150px;
margin-top: 10px;
}
.header-nav-left h3 {
font-size: 18px;
line-height: 25px;
margin: 0px;
color: #fff;
}
.header-nav-right {
float: right;
width: 59.9999%;
position: relative;
height: 50px;
}
.header-nav-right ul {
padding: 0px;
margin: 0px;
list-style: none;
position: absolute;
right: 25px;
}
.header-nav-right ul li {
float: left;
margin-left: 5px;
color: #fff;
}
.header-nav-right ul li a {
color: #fff;
text-decoration: none;
}
.user{
min-width:980px;
text-align: center;
margin: 0px;
padding: 0px;
position: relative;
}
.user-list{
width:470px;
height: 250px;
padding: 15px;
margin: 20px auto;
position: relative;
border: 1px solid #DBDBDB;
}
.user-list ul{
list-style: none;
width: 100%;
overflow: hidden;
height: 250px;
position: relative;
padding: 10px 0px;
margin: 0px;
}
.user-list ul li{
width: 100%;
list-style: none;
margin-bottom:15px;
}
.user-list ul li i{
color: red;
}
.user-list ul li label{
display: inline-block;
width:12%;
text-align: right;
font-size:16px;
margin-right: 10px;
font-family: "微软雅黑";
}
.user-list ul li input{
display: inline-block;
border: 1px solid #DBDBDB;
border-radius:4px;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
-ms-border-radius:4px;
height: 30px;
padding: 2px 5px;
vertical-align:middle;
}
.buttons{
width: 100%;
height:35px;
padding: 5px 10px;
position: absolute;
bottom: 40px;
left: 0px;
right: 0px;
}
.openbutton,.onbutton{
display: inline-block;
width: 40%;
}
.buttons button{
width: 90%;
color: #fff;
padding: 5px 10px;
background-color: #4CB0F9;
border: 1px solid #4CB0F9;
border-radius: 4px;
vertical-align: middle;
height: 35px;
line-height: 25px;
cursor:pointer;
}
#form2{
display: none;
}
</style>
</head>
<body>
<div class="header">
<div class="header-nav">
<div class="header-nav-left">
<h3>网站后台管理</h3>
</div>
<div class="header-nav-right">
<ul>
<li><span>欢迎到来到网站后台</span></li>
<li><a href="" onclick="window.location.reload()">主菜单</a></li>
<li><a href="">网站首页</a></li>
<li><a href="Index.html">后台主页</a></li>
<li><a href="">内容管理</a></li>
<li><a href="">退出</a></li>
</ul>
</div>
</div>
</div>
<div class="user">
<div class="user-list">
<form id="form1" action="" method="post">
<ul>
<li><label>用户名</label><input type="text" name="username" id="username" placeholder="手机号码或邮箱"/></li>
<li><label>密码</label><input type="password" name="pass" id="pass" placeholder="6-15位密码" /></li>
<div class="buttons">
<a class="onbutton"><button type="submit" id="onsubmit">登录</button></a>
<a class="openbutton"><button type="submit" id="getform2">注册</button></a>
</div>
</ul>
</form>
<form id="form2" action="" method="post">
<ul>
<li><label>用户名</label><input type="text" name="username" id="getusername" placeholder="手机号码或邮箱"/><i>*</i></li>
<li><label>密码</label><input type="password" name="pass" id="getpass" placeholder="6-15位密码" /><i>*</i></li>
<div class="buttons">
<a class="getbutton"><button type="submit" id="getsubmit">提交注册信息</button></a>
<p>已有账号立即<a href="#" id="getform1">登录</a></p>
</div>
</ul>
</form>
</div>
</div>
<script type="text/javascript">
$(function(){
$(".onbutton #onsubmit").on(‘click‘,function(){
var $username = $("#username").val(),
$pass = $("#pass").val();
if($username==‘‘ || $pass==‘‘){
alert("用户名及密码不能为空");
return false;
}else{
var datas={
username:$username,
pass:$pass
};
$.ajax({
url:‘user.php‘,
type:‘post‘,
dataType:‘json‘,
data:datas,
success:function(result){
if(result==‘nameerror‘){
alert(‘用户名不存在‘);
}else if(result=="passerror"){
alert("密码错误");
}else{
window.location.href = ‘http://www.sogou.com‘;//登录成功跳转
}
},
error:function(){
alert(‘false‘);
}
})
}return false;
})
$("#getsubmit").click(function(){
var $username = $("#getusername").val(),
$pass = $("#getpass").val();
if($username==‘‘ || $pass==‘‘){
alert("用户名及密码不能为空");
return false;
}else{
var datas={
username:$username,
pass:$pass
}
$.ajax({
url:‘adduser.php‘,
type:‘post‘,
data:datas,
dataType:‘json‘,
success:function(reslut){
if(reslut=="repeat"){
alert("该用户名已存在");
}else if(reslut==‘success‘){
alert("注册成功");
//注册成功后立即切换至登录表单,并记住用户名及密码;
$("#form2").hide();
$("#form1").show();
$("#username").val($username);
$("#pass").val($pass);
}
else{
alert(‘false‘);
}
}
})
}return false;
})
})
</script>
<script type="text/javascript">
document.getElementById(‘getform2‘).onclick = function(){
document.getElementById(‘form1‘).style.display= ‘none‘;
document.getElementById(‘form2‘).style.display= ‘block‘;
return false;
}
document.getElementById(‘getform1‘).onclick = function(){
document.getElementById(‘form2‘).style.display= ‘none‘;
document.getElementById(‘form1‘).style.display= ‘block‘;
return false;
}
</script>
</body>
</html>
以上是前端代码
下面贴后台代码 ，登录
<?php
@header("content-type:text/html;charset=utf8");
$conne = mysql_connect("localhost","root","root")or die("数据库用户名密码错误".@mysql_error());
$select =mysql_select_db("test",$conne);
$utf = mysql_query("set names utf8");
$username=$_REQUEST[‘username‘];
$pass = $_REQUEST[‘pass‘];
$arrays = array(array(‘one‘=>‘nameerror‘,‘two‘=>‘passerror‘));
$sqlname = mysql_query("select count(*) from user where username= ‘$username‘");
$row = mysql_fetch_row($sqlname);
$num = $row[0];
//查看用户是否存在
if(!$num){
echo json_encode($arrays[0][‘one‘]);//不存在返回nameerror
}else{
$sqlpass = mysql_query("select pass from user where username=‘$username‘");//返回一个句柄；
$passarray = mysql_fetch_row($sqlpass);//获得一个只有一行数据的数族
$passval = $passarray[0];//这里才是对应用户的密码
//判断该用户的密码是否正确
if($passval!=$pass){
echo json_encode($arrays[0][‘two‘]);//不正确返回passerror
}
}
?>
注册
<?php
@header("content-type:text/html;charset=uft8");
$conne = mysql_connect("localhost","root","root")or die("数据库用户名或密码错误".@mysql_error());
$select = mysql_select_db("test",$conne)or die("数据库用户名或密码错误".@mysql_error());
$utf = mysql_query("set names utf8");
$username= $_REQUEST[‘username‘];
$pass = $_REQUEST[‘pass‘];
$arrays = array(array("one"=>‘repeat‘,‘two‘=>‘success‘));
$sql = mysql_query("select count(*) from user where username=‘$username‘");
$row = mysql_fetch_row($sql);
$num = $row[0];
//判断用户名是否已经被注册了
if($num == 1){
echo json_encode($arrays[0][‘one‘]);//被注册返回repeat
}else{
mysql_query("insert into user(username,pass) values(‘$username‘,‘$pass‘)");
echo json_encode($arrays[0][‘two‘]);
}
?>
