try04.html

<!DOCTYPE html>
<html>
<head>
    <title>I promised I will try Q</title>
    <script src="./lib/q/q-20130830/q.js"></script>
    <script>
        var step1 = function () {
            console.log("This is step 1");
            return "ret 1"
        };
        var stepA = function () {
            console.log("This is step 2, args =", arguments);
        };
        var stepB = function () {
            console.log("This is step 3, args =", arguments);
        };

        // then() can be used multiple times. It's like, for each then(), a callback is registered.
        // and when the promise is fulfilled, all the registered callbacks are called
        var promise1 = Q.fcall(step1);
        var promiseA = promise1.then(stepA);
        var promiseB = promise1.then(stepB);
    </script>
</head>
<body>
Check console.
</body>
</html>