JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<div id="app"></div>

Babel + JSX

class Like extends React.Component {
  state = {
    like: 0,
  }

  plus = () => {
    this.setState({
      like: this.state.like + 1,
    });
  }
  render() {
    return (
      <div>
        <button onClick={this.plus}>like</button>
        {this.state.like}
      </div>
    );
  }
}

ReactDOM.render(<Like />, document.getElementById('app'));