Question

我尝试了这个简单的ReactJS应用程序，它不会呈现任何内容。我正在使用atom作为我的文本编辑器。

的index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <script src="https://fb/.me/react-15.1.0.js"></script>
  <script src="https://fb/.me/react-dom-15.1.0.js"></script>
  <script crossorigin src="https://cdnjs.cloudflare.com/ajax/libs/babel-
  core/5.8.38/browser-polyfill.min.js"></script>
  <meta charset="UTF-8">
  <title>Hello World with React</title>
</head>
<body>
  <div id="react-container"></div>
  <script type="text/babel" src="script.js"></script>
</body>
</html>

的script.js

const { render } = ReactDOM;

render(
    <h1 id='title'
        className='header'
        style={{backgroundColor: 'orange', color: 'white', fontFamily: 
        'verdana'}}>
    Hello World
    </h1>,
    document.getElementById('react-container')
);

文件结构

reactapp
    -index.html
    -script.js

如果我使用旧版本的ReactJS或者script.js文件中有任何错误，请更正我。

我在plunker中尝试了一下，它在script.js文件中显示了一些错误

enter image description here

Answer 1

为Reactjs尝试这个最小的HTML模板。希望这对你有用。

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>Hello World</title>
    <script src="https://unpkg.com/react@16/umd/react.development.js"></script>
    <script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
    <script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
  </head>
  <body>
    <div id="root"></div>
    <script type="text/babel">

      ReactDOM.render(
        <h1>Hello, world!</h1>,
        document.getElementById('root')
      );

    </script>
    <!--
      Note: this page is a great way to try React but it's not suitable for production.
      It slowly compiles JSX with Babel in the browser and uses a large development build of React.

      To set up a production-ready React build environment, follow these instructions:
      * https://reactjs.org/docs/add-react-to-a-new-app.html
      * https://reactjs.org/docs/add-react-to-an-existing-app.html

      You can also use React without JSX, in which case you can remove Babel:
      * https://reactjs.org/docs/react-without-jsx.html
      * https://reactjs.org/docs/cdn-links.html
    -->
  </body>
</html>

Answer 2

您应该使用babel-standalone源。改变自：

<script crossorigin src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.38/browser-polyfill.min.js"></script>

到

  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.21.1/babel.min.js"></script>

Answer 3

我注意到的一些事情。通常在使用Babel进行转换时需要react和react-dom库：

const React = require('react');
const {render} = require('react-dom');

或者在使用import语句时：

import React from "react";
import ReactDOM, {render} from "react-dom";

但是plunker和其他代码编辑的工作方式有点不同。由于某种原因，我无法让它在plunker中工作，但在CodePen中查看相同内容：https://codepen.io/Jeff518Code/pen/zRwqzj

还要确保引用样式属性（我在CodePen中已经这样做了）

<h1 id='title' className='header' style={{'backgroundColor': 'orange', 'color': 'white', 'fontFamily': 'Verdana'}}>

ReactJS简单的应用程序将无法呈现

3 个答案: