我正在阅读 http://andrewhfarmer.com/build-your-own-starter/#0-intro 上的 React 教程并且 Counter 组件不会显示在页面上。 html 出来是这样的:
<html>
<head>
<script src="/bundle.js" ></script>
</head>
<body>
<div id="mount"></div>
</body>
</html>
main.js
console.log('Hello World!');
import React from 'react';
import ReactDOM from 'react-dom';
import Counter from './Counter';
ReactDOM.render(
React.createElement(Counter),
document.getElementById('mount')
);
计数器.js
import React from 'react';
class Counter extends React.Component {
constructor() {
super();
this.state = {
count: 0,
};
}
render() {
return (
<button
onClick={() => {
this.setState({ count: this.state.count + 1 });
}}
>
Count: {this.state.count}
</button>
);
}
}
export default Counter;
webpack.config.js
var path = require('path');
var config = {
context: path.join(__dirname, 'src'),
entry: [
'./main.js',
],
output: {
path: path.join(__dirname, 'www'),
filename: 'bundle.js',
},
module: {
loaders: [
{
test: /\.js$/,
exclude: /node_modules/,
loaders: ['babel-loader'],
},
],
},
resolveLoader: {
root: [
path.join(__dirname, 'node_modules'),
],
},
resolve: {
root: [
path.join(__dirname, 'node_modules'),
],
},
};
module.exports = config;
我们运行服务器:
cchilders@cchilders-Latitude-E7240:~/CodeTutorials/build-react-starter$ node server.js
in the component
in the tester
in the component
in the tester
Example app listening at http://:::3000
Hash: d51a7c75081bea020fb1
Version: webpack 1.14.0
Time: 1297ms
Asset Size Chunks Chunk Names
bundle.js 744 kB 0 [emitted] main
chunk {0} bundle.js (main) 707 kB [rendered]
[0] multi main 28 bytes {0} [built]
[179] ./src/Counter.js 2.63 kB {0} [built]
webpack: bundle is now VALID.
刷新页面在终端中不显示任何内容，但开发人员工具控制台在每次刷新时显示 Hello World!
模板似乎没有被渲染，但上次我的 friend 完成教程时它按原样工作(中间件中的 public 方面可能已经提供了服务)
为什么此服务器不提供来自 / 的文件？
代码位于 https://bitbucket.org/servandoavila1/codetutorials
谢谢
最佳答案
您无需使用 document.addEventListener('DOMContentLoaded', function() {。
class Counter extends React.Component {
constructor() {
super();
this.state = {
count: 0,
};
}
render() {
return (
<button
onClick={() => {
this.setState({ count: this.state.count + 1 });
}}
>
Count: {this.state.count}
</button>
);
}
}
ReactDOM.render(
React.createElement(Counter),
document.getElementById('mount')
);<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="mount"></div>关于javascript - React 组件未在 DOM 上渲染，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41993669/