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 };