react 点击按钮将受控组件的内容更改?

Question

import React, {Component} from 'react';

class InputTest extends Component {
    constructor(props) {
        super(props);
        this.state = {
            val:''
        }
    }

    render() {
        return (
            <div>
                <input type="text" onChange={(event)=>{
                    console.log(event.target.value)
                    this.setState({
                        val:event.target.value
                    })
                }} />

                <button onClick={()=>{

                }}>哈哈</button>
            </div>
        );
    }
}

export default InputTest;

想要的效果

Answer 1

在按钮的onclick事件中修改state.val即可