react transition group

1# npm
2npm install react-transition-group --save
3
4# yarn
5yarn add react-transition-group

1function App() {
2  const [inProp, setInProp] = useState(false);
3  return (
4    <div>
5      <CSSTransition in={inProp} timeout={200} classNames="my-node">
6        <div>
7          {"I'll receive my-node-* classes"}
8        </div>
9      </CSSTransition>
10      <button type="button" onClick={() => setInProp(true)}>
11        Click to Enter
12      </button>
13    </div>
14  );
15}