Javascript Promises?

To get a better understanding, I tried to get promise-simple in jsfiddle.
My idea was to use something like this.

    console.log(new Date());
    function t(d) {
        var pd = Promise.defer();
        setTimeout(function() {pd.resolve("first" + d);}, d*1000);
        return pd;
    };
    Promise.when(t(1),t(2)).then(function(results) {console.log(new Date(),results);});

In this example function in then is called after having finished t(1) and t(2).
In log you can see delay of 2 secs for the slower function.
To get this running, I had to remove .resolve() for isPromise-part in when function. This problem exists in all sources and examples I found in github.
Therefore I'm unsure whether this is a correct solution. At least it does what I expect to do.