React

by brigand

HTML

<div id="app"></div>

CSS

body {
  padding: 2em;
}

React

function MyComp(props) {
return <div>x: {props.x}</div>
}

MyComp.defaultProps = {
	x: 'this is the default'
}

function App() {
return <div>
  <MyComp x={undefined} />
  <MyComp x="override" />
</div>
}
ReactDOM.render(<App />, document.querySelector("#app"))