cookie.js

// Fix: Allow to exist with or without jQuery
if (typeof $ === 'undefined' || $ === null || typeof $ !== 'object') {
  var $ = {};
}

// Source: https://stackoverflow.com/a/48521179/3894752
// Note: This will return false on localhost in Chrome https://stackoverflow.com/a/8225269
$.areCookiesEnabled = function() {
  try {
    // Create cookie
    document.cookie = 'cookietest=1';
    const cookiesEnabled = document.cookie.indexOf('cookietest=') !== -1;
    // Delete cookie
    document.cookie = 'cookietest=1; expires=Thu, 01-Jan-1970 00:00:01 GMT';
    return cookiesEnabled;
  } catch (e) {
    return false;
  }
}

// Source: https://gist.githubusercontent.com/bronson/6707533/raw/7317b0e0d204d00d3b01d06f9f18a09ae4ee6f4e/cookie.js
// cookie.js
//
// Usage:
//  $.cookie('mine', 'data', 5*60*1000)  -- write data to cookie named mine that lasts for five minutes
//  $.cookie('mine')                     -- read the cookie that was just set, function result will be 'data'
//  $.cookie('mine', '', -1)             -- delete the cookie

$.cookie = function(name, value, ms) {
  if (arguments.length < 2) {
    // read cookie
    const cookies = document.cookie.split(';');
    for (const cookie of cookies) {
      const c = cookie.replace(/^\s+/, '');
      if (c.indexOf(name + '=') === 0) {
        return decodeURIComponent(c.substring(name.length + 1).split('+').join(' '));
      }
    }
    return null;
  }

  // write cookie
  const date = new Date();
  date.setTime(date.getTime() + ms);
  const expires = ms ? `;expires=${date.toUTCString()}` : '';
  document.cookie = `${name}=${encodeURIComponent(value)}${expires};path=/`;
}