<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script src="Scripts/jquery-1.8.2.min.js"></script>
<script src="Scripts/jquery.cookie.js"></script>
<script type="text/javascript">
$(function () {
$("#btnLogin").click(function () {
var strName = $("#txtName").val();
var strPwd = $("#txtPwd").val();
if (strName == "sa" && strPwd == "123") {
$.cookie("userName", strName, { expires: 1 });//没有设置失效时间，所以是缓存cookie,有设置失效时间则是硬盘cookie，expires单位是天
alert("登陆成功");
window.location.href = "11Index.html";
}
});
});
</script>
</head>
<body>
用户名：<input type="text" id="txtName" /><br />
密码：<input type="text" id="txtPwd" /><br />
<input type="button" id="btnLogin" value="登录" />
</body>
</html>
登陆后的页面
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script src="Scripts/jquery-1.8.2.min.js"></script>
<script src="Scripts/jquery.cookie.js"></script>
<script type="text/javascript">
$(function () {
var strName = $.cookie("userName");
if (strName && strName != "")//判断既不为null也不为undefined 和不为空字符串
{
$('#userName').text();
} else {
alert("请先登录");
window.location = '10Cookie.html';
}
});
//退出方法
function exit() {
$.cookie("userName", "", { expires: -1 });//设置过期
alert("退出成功");
}
</script>
</head>
<body>
首页，欢迎<span id="userName"></span>
<a href="javascript:exit()">退出登录</a>
</body>
</html>