React基础语法02-onKeyUp键盘事件

<input onKeyUp={this.inputKeyUp}></input>

//键盘事件
inputKeyUp=(e)=>{
    console.log(e.keyCode)
}

if(e.keyCode==13){
    alert(e.target.value)
}

import React, { Component } from 'react';
import photo from '../asset/images/photo.jpg';
import '../asset/css/index.css'
class Home extends Component {
    constructor() {
        super();
        //react定义数据
        this.state = {
        }
    }
    //键盘事件
    inputKeyUp = (e) => {
        //console.log(e.keyCode);
        if (e.keyCode == 13) {
            alert(e.target.value)
        }
    }
    render() {
        return (
            <div>
                <input onKeyUp={this.inputKeyUp}></input>
            </div>
        )
    }
}
export default Home;