basic frontend demo with react and redux

frontend-react/src/reducers/subcategory.js

@@ -0,0 +1,12 @@
+import { SUBCATEGORY_SELECT, CATEGORY_SELECT } from "constants/actionTypes";
+
+export default (state = null, action) => {
+	switch (action.type) {
+		case SUBCATEGORY_SELECT:
+			return action.option;
+		case CATEGORY_SELECT:
+			return null;
+		default:
+			return state;
+	}
+};