HTTP cookie

function setCookie(key, value, day) { let date = new Date(); date.setTime(date.getTime() + (1000 * 60 * 60 * 24 * day)); document.cookie = key + ' = ' + value + '; ' + 'expires = ' + date.toGMTString(); } function getCookie(key) { let cookies = document.cookie.split('; '); for (let n = 0; n < cookies.length; n++) { let cookie = cookies[n].trim(); if (cookie.indexOf(key + ' = ') == 0) { return cookie.substring(key.length + 1, cookie.length); } } return ''; }