backbone-skull/example/todomvc/js/keyCodes.js

Skull sits on top of Backbone and protects your application's brains.

define({
    BACKSPACE: 8,
    TAB: 9,
    ENTER: 13,
    ESC: 27,
    DEL: 46,
    LEFT: 37,
    UP: 38,
    RIGHT: 39,
    DOWN: 40
});