score:1

<div key={0} val='a' />
<div key={1} val='c' />

score:2

<script src="https://unpkg.com/react/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
<div id="root"></div>

Related Query

More Query from same tag