如何将功能作为道具传递(功能组件到功能组件)

时间:2020-05-12 10:43:26

标签: reactjs react-hooks react-component

我目前正在尝试从类组件过渡到功能组件。我知道在类组件之间传递函数涉及绑定,然后将onClick添加到子组件。

下面是我拥有的代码-当我单击时我没有得到控制台日志-有人可以告诉我我要去哪里了吗

父母

import React, { useState } from 'react'
import Box from './Box'
import './GameBoard.css'
import { v4 as uuidv4 } from 'uuid'

function GameBoard() {

    const randLit = () => (Math.floor(Math.random() * 2)) === 1
    const [gameBoard, setGameBoard] = useState([...new Array(25)].map(box => randLit()))

    const handleIsLit = (evt) => {
        console.log('working')
    }

    return (
        <div className="GameBoard">
            {gameBoard.map((box, idx) => <Box isLit={box} key={uuidv4()} onClick={handleIsLit} />)}
        </div>
    )

}

export default GameBoard

儿童

import React from 'react'
import './Box.css'


const Box = (props) => {
        return <div onClick={props.handleIsLit} className={`Box ${props.isLit ? 'Box-light' : 'Box-dark'}`}></div>
}

export default Box

2 个答案:

答案 0 :(得分:1)

道具的名称是onClick,而不是handleIsLit

const Box = (props) => {
        return <div onClick={props.onClick} className={`Box ${props.isLit ? 'Box-light' : 'Box-dark'}`}></div>
}

答案 1 :(得分:0)

您不应通过onClick传递功能。这里是sandbox