React中国We provide CDN-hosted versions of React on our download page. These pre-built files use the UMD module format. Dropping them in with a simple <script> tag will inject the React and ReactDOM globals into your environment. It should also work out-of-the-box in CommonJS and AMD environments.
You can use React with a CommonJS module system like browserify or webpack. Use the react and react-dom npm packages.
// main.js
var React = require('react');
var ReactDOM = require('react-dom');
ReactDOM.render(
<h1>Hello, world!</h1>,
document.getElementById('example')
);
Configure babel with a .babelrc file:
{ "presets": ["react"] }
Note:
If you are using ES2015, you will want to also use the
babel-preset-es2015package.
To install React DOM and build your bundle with browserify:
$ npm install --save react react-dom babelify babel-preset-react
$ browserify -t [ babelify ] main.js -o bundle.js
To install React DOM and build your bundle with webpack:
$ npm install --save react react-dom babel-preset-react babel-loader babel-core
$ webpack main.js bundle.js --module-bind 'js=babel-loader'
Note:
If you are using ES2015, you will want to also use the
babel-preset-es2015package.
Note: by default, React will be in development mode, which is slower, and not advised for production. To use React in production mode, set the environment variable NODE_ENV to production (using envify or webpack's DefinePlugin). For example:
new webpack.DefinePlugin({
"process.env": {
NODE_ENV: JSON.stringify("production")
}
});
Update your HTML file as below:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Hello React!</title>
<script src="build/react.js"></script>
<script src="build/react-dom.js"></script>
<!-- No need for Babel! -->
</head>
<body>
<div id="example"></div>
<script src="build/helloworld.js"></script>
</body>
</html>
Bower is a package manager optimized for the front-end development. If multiple packages depend on a package - jQuery for example - Bower will download jQuery just once. This is known as a flat dependency graph and it helps reduce page load. For more info, visit http://bower.io/
If you'd like to use bower, it's as easy as:
bower install --save react
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Hello React!</title>
<script src="bower_components/react/react.js"></script>
<script src="bower_components/react/react-dom.js"></script>
<script src="https://unpkg.com/babel-core@5.8.38/browser.min.js"></script>
</head>
<body>
<div id="example"></div>
<script type="text/babel">
ReactDOM.render(
<h1>Hello, world!</h1>,
document.getElementById('example')
);
</script>
</body>
</html>
We have instructions for building from master in our GitHub repository.