在reactjs中渲染前重置状态

import React, { Component } from 'react';

class MyComponent extends Component {
  constructor(props) {
    super(props);
    this.state = {
      counter: 0
    };
  }

  componentWillMount() {
    this.setState({ counter: 0 });
  }

  render() {
    return (
      <div>
        <h1>Counter: {this.state.counter}</h1>
        <button onClick={this.resetCounter}>Reset</button>
      </div>
    );
  }

  resetCounter = () => {
    this.setState({ counter: 0 });
  }
}

export default MyComponent;