5 Guys The Evolution Of Classes In Javascript Part 4

var Person = function (name, basics) {
    this.name = name;
    this.stuff = basics || {};
    this.index = -1;
    this.find = function (where, keep) {
        var label = where.split("."),
        box = this.stuff;
        while (label.length > 1) {
            if (typeof box[label[0]] === "undefined") {
                if (keep) {
                    box[label[0]] = {};
                } else {
                    return;
                }
            } else {
                box = box[label.shift()];
            }
        }
        return [box, label[0]];
    }
};

var Guy = function (name, basics) {
    var person = new Person(name, basics);
    this.have = function (what) {
        if (typeof person.find(what) !== "undefined") {
            return true;
        } else {
            return false;
        }
    };
    this.please = function (action) {
        var request = Array.prototype.slice.apply(arguments);
        request.shift();
        request.unshift(person);
        if (typeof action === "function") {
            action.apply(this, request);
        } else {
            if (this[action]) {
                this[action].apply(this, request);
            }
        }
    };
    this.show = function (what) {
        var found, box, label;
        if (typeof what === "undefined") {
            found = [person, "stuff"];
        } else {
            found = person.find(what);
        }
        box = found[0];
        label = found[1];
        if (typeof box[label] === "object") {
            return JSON.stringify(box[label]);
        } else {
            return box[label];
        }
    };
};

Guy.prototype.keep = function (what, where) {
    this.please(function (person, what, where) {
        var found, box, label;
        if (where) {
            found = person.find(where, true);
        } else {
            found = [person.stuff, ++person.index];
        }
        box = found[0],
        label = found[1];
        if (typeof box[label] === "undefined") {
            box[label] = what;
        }
    }, what, where);
};

var bob = new Guy("Bob");
bob.keep({socks: 2});
bob.show("0");
bob.keep({cash: 50}, "wallet");
bob.show("wallet");