📜  refs 数组反应 - Javascript 代码示例

📅  最后修改于: 2022-03-11 15:02:20.141000             🧑  作者: Mango

代码示例1
import React, { useRef, useEffect } from 'react';
import ReactDOM from 'react-dom';

const words = ['Many', 'Words'];

const App = () => {
  const wordsRef = useRef([]);

  const displayWords = words.map((word, i) => (
    
       (wordsRef.current = [...wordsRef.current, el])}>
        {word}
      
    
  ));

  useEffect(() => {
    console.log(wordsRef);
    console.log(wordsRef.current[0].classList);
  });

  return 
{displayWords}
; }; ReactDOM.render(, document.getElementById('root'));