[JS] Wzorzec Piaskownica

console.clear();
var cl = function(text){ console.log(text); }


Sandbox.modules = {};

Sandbox.modules.returnNumbers = function(MYAPP) {
    MYAPP.return100 = function() {return 100;};
};

Sandbox.modules.returnLetters = function(MYAPP) {
    MYAPP.returnABC = function() {return "ABC";};
};


function Sandbox() {


    var args = Array.prototype.slice.call(arguments);  //Put the arguments

    var callback = args.pop(); //The last argument is the callback
    var requiredmodules = args;  //The remaining arguments are the require

    for (i=0; i< requiredmodules.length; i++) {
        Sandbox.modules[requiredmodules[i]](this);
    }

    callback(this);

}



//Finally here is an example of usage

new Sandbox('returnNumbers', 'returnLetters', function (MYAPP) {

    console.log(MYAPP.return100());
    console.log(MYAPP.returnABC());
});