JQuery ajax 登陆
<form action="test.php" name="login"method="post">用户名:<input type="text" name="username" id="username" />密码:<input type="text" name="passwork" id="passwork" /><input type="button" value="登录" id="login" /></form><div id="result"></div>$(function (){ $('#login').click(function (){ var dataString ='username='+$('#username').val()+'&password='+$('#password').val(); $.ajax({ url:'test.php', type:'post', data:dataString, success:function(data){ if(data == '1'){ $('#result').html('登陆成功'); } else if(data == '0'){ $('#result').html('登录失败'); } else{ $('#result').html(data); } } }); });});
<?php mysql_connect('localhost','root','');mysql_select_db('news');mysql_query('set names utf8');$u = $_POST['username'];$p = $_POST['passwork'];if($u == '' || $p == ''){ echo "不能为空"; exit;}$sql = "select * from tuser ";$result = mysql_query($sql);$num = mysql_num_rows($result);/*$sql ="insert into tuser value(null,'$u','$p')";$result = mysql_query($sql);$num = mysql_insert_id();//插入数据*/if($num >0){ echo "1";}else{ echo '0';}?>
从上面可以看出来可以把验证写在后台的php文件里进行验证，也可以在前台通过js进行验证。
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