用户登录（php）
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<script type="text/javascript" src="jquery-1.11.3.min.js"></script>
</head>
<script type="text/javascript">
$(document).ready(function(){
$("#btn1").click(function(){
var a=$("#name").val();
var b=$("#pwd").val();
$.post("2.php",{"name":a,"pwd":b},function(data){
alert(data);
});
})
});
</script>
<body>
姓名：<input type="text" id="name">
<br>
密码：<input type="password" id="pwd">
<br>
<button id="btn1">提交</button>
</body>
</html>
