Plz wait em all

gistfile1.js

var whenAll = function (...deferreds) {
    var _promises = [];

    deferreds.forEach(function (deferred) {
        var _deferred = new $.Deferred;

        deferred.always(function () {
            _deferred.resolve();
        });

        _promises.push(_deferred.promise());
    });

    return $.when(..._promises);
}