handleKeyPress.js

_handleKeypressEvent: function(event) {
            var instance = this;

            var target = event.target;

            else if (target.hasClass("form-builder-field")) {
                var keyCode = event.keyCode;

                var field = target;

                if (keyCode === 40) { // Down Arrow
                    next = A.Widget.getByNode(field.next());

                    if (next !== null) {
                        instance.simulateFocusField(next);
                    }
                }

                else if (keyCode === 38) { // Up Arrow
                    previous = A.Widget.getByNode(field.previous());

                    if (previous !== null) {
                        instance.simulateFocusField(previous);
                    }
                }

                else if (keyCode === 13) { // Enter Key
                }
            }

            event.stopPropagation();
        },