https://065hs.com/js/cookie.js

1//-----------------------------cookie------------------------------
2var cookie = {
3    //milliseconds remaining today
4    leftTime: function() {
5        var curTamp = new Date().getTime();
6        var curDate = new Date(); //191223 added
7        //The time stamp of the early morning of the day, minus one millisecond is to prevent the state that the subsequent time will not reach 00:00:00
8        var curWeeHours = new Date(curDate.toLocaleDateString()).getTime() - 1;
9        var passedTamp = curTamp - curWeeHours;
10        var leftTamp = 24 * 60 * 60 * 1000 - passedTamp;
11        return leftTamp;
12    },
13    //n: key name, v: key value, exp: expiration time (ms)
14    setCookie: function(n, v, exp) {
15        var date = new Date()
16        date.setTime(date.getTime() + exp);
17        document.cookie = n + "=" + escape(v) +
18            ((exp == null) ? "" : ";expires=" + date.toGMTString())
19    },
20    //n is the key name of the key value you want to get
21    getCookie: function(n) {
22        var reg = /\s/g;
23        var result = document.cookie.replace(reg, "");
24        var resultArr = result.split(";");
25        for (var i = 0; i < resultArr.length; i++) {
26            var nameArr = resultArr[i].split("=");
27            if (nameArr[0] == n) {
28                return nameArr[1];
29            }
30        }
31    }
32};
33  
34//generate the guid
35var guid = function() {
36    function S4() {
37        return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
38    }
39    return (S4() + S4() + S4() + S4() + S4() + S4() + S4() + S4());
40};
41  
42//If the guid does not exist, then generate the guid
43console.log(cookie.leftTime() / 1000 / 60 /60);
44!cookie.getCookie('guid') && cookie.setCookie('guid', guid(), cookie.leftTime());
45
46/*
47                   _ooOoo_
48                  o8888888o
49                  88" . "88
50                  (| -_- |)
51                  O\  =  /O
52               ____/`---'\____
53             .'  \\|     |//  `.
54            /  \\|||  :  |||//  \
55           /  _||||| -:- |||||-  \
56           |   | \\\  -  /// |   |
57           | \_|  ''\---/''  |   |
58           \  .-\__  `-`  ___/-. /
59         ___`. .'  /--.--\  `. . __
60      ."" '<  `.___\_<|>_/___.'  >'"".
61     | | :  `- \`.;`\ _ /`;.`/ - ` : | |
62     \  \ `-.   \_ __\ /__ _/   .-` /  /
63======`-.____`-.___\_____/___.-`____.-'======
64                   `=---='
65^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
66            佛祖保佑       永无BUG
67*/