问React事件处理函数无需使用bind()即可工作

EN

import React, { Component } from 'react';

class Experiment extends Component {
    constructor(props){
        super(props);

    }

    clickEvent(e){
            e.preventDefault();
            document.getElementById('change').innerHTML="This text changed";
        }

    render(){
        return(
            <div>
                <p id='change'>This paragraph will change</p>
                <button onClick={this.clickEvent}>Press me</button>
            </div>
            );
    }
}

export default Experiment;