组件

Introduction

• anything will be ok as a props
• key: built-in props

Father.jsx

1. 导入

import Greeting from "./components/Greeting";

2. 使用 - 传递数据

<Greeting user={"glpla"}></Greeting>

Child.jsx

import React from "react";

const Greeting = (props) => {
  return <div>hi, {props.user}</div>;
};

export default Greeting;