```
    $(document).keydown(function(event) {

        doSomething(event);
        event.preventDefault();
    });

```

With above code, i am able to get keycode for single key. But, when i am using combination of key, i am getting event for first and second key. For example, !(Shift + 1), $(Shift + 4).

How can i get keycode for combination of keys?