5a32ff9ee6b56f48e5bf0f5241ac14ae5f4196dc
[vchess.git] / client / src / utils / misc.js
1 export const util =
2 {
3 // Source: https://www.quirksmode.org/js/cookies.html
4 setCookie: function(name, value)
5 {
6 var date = new Date();
7 date.setTime(date.getTime()+(183*24*60*60*1000)); //6 months
8 var expires = "; expires="+date.toGMTString();
9 document.cookie = name+"="+value+expires+"; path=/";
10 },
11
12 getCookie: function(name, defaut) {
13 var nameEQ = name + "=";
14 var ca = document.cookie.split(';');
15 for (var i=0;i < ca.length;i++)
16 {
17 var c = ca[i];
18 while (c.charAt(0)==' ')
19 c = c.substring(1,c.length);
20 if (c.indexOf(nameEQ) == 0)
21 return c.substring(nameEQ.length,c.length);
22 }
23 return defaut; //cookie not found
24 },
25
26 random: function(min, max)
27 {
28 if (!max)
29 {
30 max = min;
31 min = 0;
32 }
33 return Math.floor(Math.random() * (max - min) ) + min;
34 },
35
36 // Inspired by https://github.com/jashkenas/underscore/blob/master/underscore.js
37 sample: function(arr, n)
38 {
39 n = n || 1;
40 let cpArr = arr.map(e => e);
41 for (let index = 0; index < n; index++)
42 {
43 const rand = getRandInt(index, n);
44 const temp = cpArr[index];
45 cpArr[index] = cpArr[rand];
46 cpArr[rand] = temp;
47 }
48 return cpArr.slice(0, n);
49 },
50
51 shuffle: function(arr)
52 {
53 return sample(arr, arr.length);
54 },
55
56 range: function(max)
57 {
58 return [...Array(max).keys()];
59 },
60
61 // TODO: rename into "cookie" et supprimer les deux ci-dessous
62 // Random (enough) string for socket and game IDs
63 getRandString: function()
64 {
65 return (Date.now().toString(36) + Math.random().toString(36).substr(2, 7))
66 .toUpperCase();
67 },
68
69 // Shortcut for an often used click (on a modal)
70 doClick: function(elemId)
71 {
72 document.getElementById(elemId).click(); //or ".checked = true"
73 },
74 };