javascript小工具之——cookie操作

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;}
};