diff --git a/react-debug/src/App.js b/react-debug/src/App.js
index 857b904..2bade86 100644
--- a/react-debug/src/App.js
+++ b/react-debug/src/App.js
@@ -3,7 +3,6 @@ import {
   HashRouter as Router,
   Switch,
   Route,
-  Link,
   useParams
 } from "react-router-dom";
 
@@ -100,33 +99,19 @@ const AlbumRoute = () => {
   return <Album album={album_id} />;
 }
 
-class App extends React.Component {
-  constructor(props) {
-    super(props);
-    this.state = {
-      curAlbum: window.location.hash,
-    };
-  }
-  render() {
-    let {curAlbum} = this.state;
-    console.log(this.state);
-    let content;
-
-    return (
-      <div className="container">
-        <Router>
-          <Switch>
-            <Route exact path="/">
-              <AlbumIndex />
-            </Route>
-            <Route exact path="/:album_id">
-              <AlbumRoute />
-            </Route>
-          </Switch>
-        </Router>
-      </div>
-    );
-  }
+const App = () => {
+  return <div className="container">
+    <Router>
+      <Switch>
+        <Route exact path="/">
+          <AlbumIndex />
+        </Route>
+        <Route exact path="/:album_id">
+          <AlbumRoute />
+        </Route>
+      </Switch>
+    </Router>
+  </div>
 }
 
 export default App;