document.getElementById('mountNode').innerHTML=
`
<div>
Hello HTML
<input />
<pre>${(new Date).toLocaleTimeString()}</pre>
</div>`;
ReactDOM.render(
React.createElement('div',null,'Hellow World',
React.createElement('input',null),
React.createElement('pre',null,(new Date).toLocaleTimeString())
),
document.getElementById('mountNode2')
);