<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Jquery 操作cookie示例</title>
<link href="~/Css/css.css" rel="stylesheet" />
<script src="~/Js/jquery-3.1.1.min.js"></script>
<script>
jQuery.cookie = function (name, value, options) {
if (typeof value != 'undefined') {
options = options || {};
if (value === null) {
value = '';
options.expires = -1;
}
var expires = '';
if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
var date;
if (typeof options.expires == 'number') {
date = new Date();
date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
} else {
date = options.expires;
}
expires = '; expires=' + date.toUTCString();
}
var path = options.path ? '; path=' + (options.path) : '';
var domain = options.domain ? '; domain=' + (options.domain) : '';
var secure = options.secure ? '; secure' : '';
document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
} else {
var cookieValue = null;
if (document.cookie && document.cookie != '') {
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i++) {
var cookie = jQuery.trim(cookies[i]);
if (cookie.substring(0, name.length + 1) == (name + '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
break;
}
}
}
return cookieValue;
}
}
//写cookie
//注：如果想让cookie在主域名下的所有二级域名共用，需要设置domain为′.youdomain.com′
//domain：创建cookie所在网页所拥有的域名；secure：默认是false，如果为true，cookie的传输协议需为https
//expires: 过期时间 单位天
$.cookie("example", "笔记本电脑", { expires: 1, domain: 'localhost' });
//读cookie
var a = $.cookie("example");
alert(a);
//清空cookie
//$.cookie("example", null);
//alert($.cookie("example"));
</script>
</head>
<body>
<div>
</div>
</body>
</html> 
