javascript 反应地图功能

Posted 2021-05-03

import React from 'react';
import ReactDOM from 'react-dom';

const App = props => {
  const items = ['Bread', 'Milk', 'Eggs', 'Tea'];
  return <List items={items} />;
};

const List = props => {
  const listItems = props.items.map((item, index) => (
    <li key={index}>{item}</li>
  ));
  return <ul>{listItems}</ul>;
};
ReactDOM.render(<App />, document.getElementById('root'));