react hook的todolist

import React from ‘react‘;
import  { useState } from ‘react‘;

function App() {
  const [input, setInput] = useState(‘‘); // 
  const [inputList, setInputList] = useState([]); // 
  let submitData=()=>{
    let arr=[]
    arr.push({
      value:input
    })
    arr = [...arr,...inputList]
    setInputList(arr)
  }
  let delLi=(e)=>{
    let index = e.target.getAttribute(‘data-index‘)
    let arr = JSON.parse(JSON.stringify(inputList))
    arr.splice(index,1)
    setInputList(arr)
  }
  return (
    <div>
      <input onInput={(e)=>{setInput(e.target.value)}}></input> <button onClick={submitData}>提交</button>
      <div>
        <ul>
          {
            inputList.map((val,index)=>{
              return <li onClick={(e)=>delLi(e)} key={index} data-index={index}>{val.value}</li>
            })
          }
        </ul>
      </div>
    </div>
  );
}

export default App;