React__4 Class

class.jsx

import React, { Component } from 'react'

export default class Clicker extends Component {
	// constructor(props) {
	// 	super(props)
	// 	this.state = {
	// 		count: 0
	// 	}
	// }
	state = {
		count: 0
	}
	handler = () => {
		this.setState({ count: this.state.count + 1 })
	}
	render() {
		return (
			<>
				<button onClick={this.handler}>
					{this.state.count}
				</button>
			</>

		)
	}
}