jua*_*nli 1 javascript reactjs create-react-app
我使用Create-React-App构建一个小的React应用程序.完整代码存储在github中
我的文件结构:
src
components
Players.js
Player.js
App.css
App.js
index.css
index.js
...
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App.js:
import React from 'react';
import './App.css';
import PropTypes from 'prop-types';// used to fix the error: 'PropTypes' is not defined
import Header from './components/Header';
import Players from './components/Players';
const App = (props) => (
<div className="scoreboard">
<Header title={props.title} />
<Players />
</div>
);
App.propTypes = {
title: PropTypes.string.isRequired
};
export default App;
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Player.js:
import React from 'react';
const Player = (props) => (
<div className="player">
<div className="player-name">
Jim Hoskins
</div>
<div className="player-score">
<div className="counter">
<button className="counter-action decrement"> - </button>
<div className="counter-score">31</div>
<button className="counter-action increment"> + </button>
</div>
</div>
</div>
);
export default Player;
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Players.js:
import React from 'react';
import Player from './components/Player';
const Players = () => (
<div className="players">
<div className="player">
<div className="player-name">
Jim Hoskins
</div>
<div className="player-score">
<div className="counter">
<button className="counter-action decrement"> - </button>
<div className="counter-score">31</div>
<button className="counter-action increment"> + </button>
</div>
</div>
</div>
<div className="player">
<div className="player-name">
Juan Li
</div>
<div className="player-score">
<div className="counter">
<button className="counter-action decrement"> - </button>
<div className="counter-score">30</div>
<button className="counter-action increment"> + </button>
</div>
</div>
</div>
</div>
)
export default Players;
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这条线import Player from './components/Player';导致了这个错误:
但是如果我把这行放在App.js文件的顶部,它就不会报告这样的编译错误.我真的想知道我的代码确实存在什么问题?
您的文件路径错误.Player是在同一个文件夹中Players,所以你需要说import Player from './Player'
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