1 注意：如果不设置path，默认为当前路径，新建cookie
2
3 $.cookie('name', 'value');
4
5 新建带限制时间cookie
6 $.cookie('name', 'value', { expires: 7 });
7 新建限制时间和路径cookie，
8 $.cookie('name', 'value', { expires: 7, path: '/' });
9
10
11 读取cookie
12 $.cookie('name'); // => "value"
13 $.cookie('nothing'); // => undefined
14
15 读取所有可用cookie$.cookie(); // => { "name": "value" }
16
17
18 删除cookie
19 // Returns true when cookie was successfully deleted, otherwise false
20 $.removeCookie('name'); // => true
21 $.removeCookie('nothing'); // => false
22
23 // Need to use the same attributes (path, domain) as what the cookie was written with
24 $.cookie('name', 'value', { path: '/' });
25 // This won't work!
26 $.removeCookie('name'); // => false
27 // This will work!
28 $.removeCookie('name', { path: '/' }); // => true
源：https://github.com/carhartl/jquery-cookie#readme