[英]Include React to existing web page - multiple react components
I am trying to include React to an web page. 我试图将React包含在网页中。 i would like to break up the components into it's own .js files.
我想将组件分解为自己的.js文件。 i am not having any luck.
我没有运气。
My index.html file looks like this. 我的index.html文件看起来像这样。
<html> <head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Hello React!</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@6.26.0/babel.js"></script>
</head>
<body>
<div id="root">
</div>
<script src="app.js" type="text/babel"> </script>
<script src="greetings.js" type="text/babel"> </script>
</body>
My app.js file looks like this. 我的app.js文件看起来像这样。
class App extends React.Component {
render() {
return (
<div>
<Greetings />
<h1>Hello World!</h1>
</div>
)
}
}
ReactDOM.render(<App />, document.getElementById('root'))
My greetings.js file looks like this 我的greetings.js文件看起来像这样
class Greetings extends React.Component {
render() {
return <h1>Hi</h1>
}
}
So i was expecting "Hi" followed by "Hello world!" 所以我期待着“嗨”,接着是“Hello world!” but i am getting "Greetings is not defined".
但我得到“问候没有定义”。
Can you help me? 你能帮助我吗?
I am answering my own question. 我在回答我自己的问题。 The order which loads the .js files was the problem.
加载.js文件的顺序是问题所在。 it has to be
它一定要是
<script src="greetings.js" type="text/babel"> </script>
<script src="app.js" type="text/babel"> </script>
Then it displayed the web page correctly. 然后它正确显示了网页。
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