I wrote a small JavaScript libary that aims to simplify JavaScript cookies. You can find the code on Github: https://github.com/js-coder/cookie.js I tested it in various browsers and it seems to work everywhere.
It's not a lot of code so I'll insert it here as well: I updated the code quite a bit so I posted the new version below.
(function (undefined) {
var isArray = Array.isArray || function (value) { // check if value is an array created with [] or new Array
return Object.prototype.toString.call(value) === '[object Array]';
},
isPlainObj = function (value) { // check if value is an object that was created with {} or new Object
return Object.prototype.toString.call(value) === '[object Object]';
},
getKeys = Object.keys || function (obj) { // Object.keys polyfill
var keys = [],
key = '';
for (key in obj) {
if (obj.hasOwnProperty(key)) keys.push(key);
}
return keys;
},
retrieve = function (value, fallback) { // return fallback if the value is undefined, otherwise return value
return value === undefined ? fallback : value;
},
_cookie = {
set: function (key, value, options) {
if (isPlainObj(key)) {
for (var k in key) {
if (key.hasOwnProperty(k)) this.set(k, key[k]);
}
} else {
options = options || {};
var expires = options.expires || '',
expiresType = typeof(expires),
path = options.path ? ';path=' + options.path : '',
domain = options.domain ? ';domain=' + options.domain : '',
secure = options.secure ? ';secure' : '';
if (expiresType === 'string' && expires !== '') expires = ';expires=' + expires;
else if (expiresType == 'number') { // this is needed because IE does not support max-age
var d = new Date;
d.setTime(d.getTime() + expires);
expires = ';expires=' + d.toGMTString();
} else if (expires.hasOwnProperty('toGMTString')) expires = ';expires=' + expires.toGMTString();
document.cookie = key + '=' + escape(value) + expires + path + domain + secure;
}
return this; // return the _cookie object to allow chaining
},
remove: function (keys) {
keys = isArray(keys) ? keys : arguments;
for (var i = 0, length = keys.length; i < length; i++) {
this.set(keys[i], '', {
expires: -60 * 60 * 24
});
}
return this; // return the _cookie object to allow chaining
},
empty: function () {
return this.remove(getKeys(this.all())); // return the _cookie object to allow chaining
},
get: function (key, fallback) {
fallback = fallback || undefined;
if (isArray(key)) {
var result = {},
cookies = this.all();
for (var i = 0, l = key.length; i < l; i++) {
var value = key[i];
result[value] = retrieve(cookies[value], fallback);
}
return result;
} else {
var cookies = this.all();
return retrieve(cookies[key], fallback);
}
},
all: function () {
if (document.cookie == '') return {};
var match = document.cookie.split('; '),
results = {};
for (var i = 0, l = match.length; i < l; i++) {
var tmp = match[i].split('=');
results[tmp[0]] = unescape(tmp[1]);
}
return results;
},
enabled: function () {
var ret = cookie.set('a', 'b').get('a') === 'b';
cookie.remove('a');
return ret;
}
},
cookie = function (key, fallback) {
return _cookie.get(key, fallback);
},
methods = ['set', 'remove', 'empty', 'get', 'all', 'enabled'];
for (var i = 0, l = methods.length; i < l; i++) { // copy all _cookie methods to cookie
var method = methods[i];
cookie[method] = _cookie[method];
}
window.cookie = cookie;
}());
You can find the documentation here: https://github.com/js-coder/cookie.js/blob/master/readme.md
I would love to know how I can improve the code or the API.
