javascript et les cookies¶

/*!
* jQuery Cookie Plugin v1.3.1
* https://github.com/carhartl/jquery-cookie
*
* Copyright 2013 Klaus Hartl
* Released under the MIT license
*/
(function (factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as anonymous module.
define(['jquery'], factory);
} else {
// Browser globals.
factory(jQuery);
}
}(function ($) {

var pluses = /\+/g;

function raw(s) {
return s;
}

function decoded(s) {
return decodeURIComponent(s.replace(pluses, ' '));
}

function converted(s) {
if (s.indexOf('"') === 0) {
// This is a quoted cookie as according to RFC2068, unescape
s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');
}
try {
return config.json ? JSON.parse(s) : s;
} catch(er) {}
}

var config = $.cookie = function (key, value, options) {

// write
if (value !== undefined) {
options = $.extend({}, config.defaults, options);

if (typeof options.expires === 'number') {
var days = options.expires, t = options.expires = new Date();
t.setDate(t.getDate() + days);
}

value = config.json ? JSON.stringify(value) : String(value);

return (document.cookie = [
config.raw ? key : encodeURIComponent(key),
'=',
config.raw ? value : encodeURIComponent(value),
options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
options.path ? '; path=' + options.path : '',
options.domain ? '; domain=' + options.domain : '',
options.secure ? '; secure' : ''
].join(''));
}

// read
var decode = config.raw ? raw : decoded;
var cookies = document.cookie.split('; ');
var result = key ? undefined : {};
for (var i = 0, l = cookies.length; i < l; i++) {
var parts = cookies[i].split('=');
var name = decode(parts.shift());
var cookie = decode(parts.join('='));

if (key && key === name) {
result = converted(cookie);
break;
}

if (!key) {
result[name] = converted(cookie);
}
}

return result;
};

config.defaults = {};

$.removeCookie = function (key, options) {
if ($.cookie(key) !== undefined) {
// Must not alter options, thus extending a fresh object...
$.cookie(key, '', $.extend({}, options, { expires: -1 }));
return true;
}
return false;
};

}));

$.cookie('tutoriel', 'jQuery'); // créé un cookie « tutoriel » de valeur « jQuery »

$.cookie('tutoriel', 'jQuery', {
    expire : 7,
    path : '/'
});

$.cookie('tutoriel', null);