import React, { useState, useEffect } from "react";

export default function App(){
  const [checkedInputs, setCheckedInputs] = useState([]);

  const changeHandler = (checked, id) => {
    if (checked) {
      setCheckedInputs([...checkedInputs, id]);
    } else {
      // 체크 해제
      setCheckedInputs(checkedInputs.filter((el) => el !== id));
    }
  };


  return (
    <div>
      <input 
        id={???}
        type="checkbox" 
        onChange={()=>{
          changeHandler(e.currentTarget.checked, id값)
        }}
        checked={checkedInputs.includes(id값 …