Create stateless component.

Author: mjleehh

src/index.jsx

@@ -1,12 +1,9 @@
 import React from 'react'
 import ReactDom from 'react-dom'
 
-class RootComponent extends React.Component {
-    render() {
-        console.log('render root component')
-        return <h1>Root Component Body</h1>
-    }
+function RootComponent(props) {
+    console.log('render root component')
+    return <h1>Root Component Body</h1>
 }
 
-
 ReactDom.render(<RootComponent />, document.getElementById("main"))