Abstract to useKeydown composition API

src/composition/useKeydown.js

@@ -0,0 +1,17 @@
+import { onBeforeUnmount } from 'vue';
+
+export const useKeydown = function(keyCombo) {
+  let onkey = function(event) {
+    if(keyCombo.key == event.key) {
+      keyCombo.fn()
+    }
+  }
+
+  window.addEventListener('keydown', onkey);
+
+  onBeforeUnmount(()=> {
+    window.removeEventListener('keydown', onkey);
+  })
+}
+
+export default useKeydown;