var docCookies = { ?getItem: function (sKey) { ???return decodeURIComponent(document.cookie.replace(new RegExp("(?:(?:^|.*;)\\s*" + encodeURIComponent(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*([^;]*).*$)|^.*$"), "$1")) || null; ?}, ?setItem: function (sKey, sValue, vEnd, sPath, sDomain, bSecure) { ???if (!sKey || /^(?:expires|max\-age|path|domain|secure)$/i.test(sKey)) { return false; } ???var sExpires = ""; ???if (vEnd) { ?????switch (vEnd.constructor) { ???????case Number: ?????????sExpires = vEnd === Infinity ? "; expires=Fri, 31 Dec 9999 23:59:59 GMT" : "; max-age=" + vEnd; ?????????break; ???????case String: ?????????sExpires = "; expires=" + vEnd; ?????????break; ???????case Date: ?????????sExpires = "; expires=" + vEnd.toUTCString(); ?????????break; ?????} ???} ???document.cookie = encodeURIComponent(sKey) + "=" + encodeURIComponent(sValue) + sExpires + (sDomain ? "; domain=" + sDomain : "") + (sPath ? "; path=" + sPath : "") + (bSecure ? "; secure" : ""); ???return true; ?}, ?removeItem: function (sKey, sPath, sDomain) { ???if (!sKey || !this.hasItem(sKey)) { return false; } ???document.cookie = encodeURIComponent(sKey) + "=; expires=Thu, 01 Jan 1970 00:00:00 GMT" + ( sDomain ? "; domain=" + sDomain : "") + ( sPath ? "; path=" + sPath : ""); ???return true; ?}, ?hasItem: function (sKey) { ???return (new RegExp("(?:^|;\\s*)" + encodeURIComponent(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=")).test(document.cookie); ?}, ?keys: /* optional method: you can safely remove it! */ function () { ???var aKeys = document.cookie.replace(/((?:^|\s*;)[^\=]+)(?=;|$)|^\s*|\s*(?:\=[^;]*)?(?:\1|$)/g, "").split(/\s*(?:\=[^;]*)?;\s*/); ???for (var nIdx = 0; nIdx < aKeys.length; nIdx++) { aKeys[nIdx] = decodeURIComponent(aKeys[nIdx]); } ???return aKeys; ?}};//用法docCookies.setItem(name, value[, end[, path[, domain[, secure]]]])js封装设置获取cookie
原文地址：https://www.cnblogs.com/guolintao/p/9081180.html