Cookie management

cookie.js

var cookies = (function () {

    function create(name, value, days) {
        var expires;
        if (days) {
            var date = new Date();
            date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
            expires = "; expires=" + date.toGMTString();
        } else { expires = ""; }
        document.cookie = name + "=" + value + expires + "; path=/";
    }

    function read(name) {
        var nameEQ = name + "=";
        var ca = document.cookie.split(';');
        for (var i = 0; i < ca.length; i++) {
            var c = ca[i];
            while (c.charAt(0) == ' ') { c = c.substring(1, c.length); }
            if (c.indexOf(nameEQ) === 0) { return c.substring(nameEQ.length, c.length); }
        }
        return null;
    }

    function erase(name) {
        create(name, "", -1);
    }

    return {
        create : create,
        read : read,
        erase : erase
    };
})();