import '模块文件地址'
import 组件 from '模块文件地址'

export default class MyComponent extends Component{
  ...
}

import MyComponent from './MyComponent';

class Photo extends React.Component {
  render() {
    ...
  }
}

class Photo extends React.Component {
  componentWillMount() {

  }
  render() {
    return (
      <Image source={this.props.source} />
    );
  }
}

class Video extends React.Component {
  static defaultProps = {
    autoPlay: false,
    maxLoops: 10,
  }; // 注意这里有分号
  static propTypes = {
    autoPlay: React.PropTypes.bool.isRequired,
    maxLoops: React.PropTypes.number.isRequired,
    posterFrameSrc: React.PropTypes.string.isRequired,
    videoSrc: React.PropTypes.string.isRequired,
  }; // 注意这里有分号
  render() {
    return (
      <View />
    );
  } // 注意这里既没有分号也没有逗号
}

class Video extends React.Component {
  constructor(props){
    super(props);
    this.state = {
      loopsRemaining: this.props.maxLoops,
    };
  }
}

//ES5
var PostInfo = React.createClass({
  handleOptionsButtonClick: function(e) {
    // Here, 'this' refers to the component instance.
    this.setState({showOptionsModal: true});
  },
  render: function(){
    return (
      <TouchableHighlight onPress={this.handleOptionsButtonClick}>
        <Text>{this.props.label}</Text>
      </TouchableHighlight>
    )
  },
});

//ES6
class PostInfo extends React.Component
{
  handleOptionsButtonClick(e){
    this.setState({showOptionsModal: true});
  }
  render(){
    return (
      <TouchableHighlight 
        onPress={this.handleOptionsButtonClick.bind(this)}
        onPress={e=>this.handleOptionsButtonClick(e)}
        >
        <Text>{this.props.label}</Text>
      </TouchableHighlight>
    )
  },
}

// 错误的做法
class PauseMenu extends React.Component{
  componentWillMount(){
    AppStateIOS.addEventListener('change', this.onAppPaused.bind(this));
  }
  componentDidUnmount(){
    AppStateIOS.removeEventListener('change', this.onAppPaused.bind(this));
  }
  onAppPaused(event){
  }
}

// 正确的做法
class PauseMenu extends React.Component{
  constructor(props){
    super(props);
    this._onAppPaused = this.onAppPaused.bind(this);//注意这里
  }
  componentWillMount(){
    AppStateIOS.addEventListener('change', this._onAppPaused); //还有这里
  }
  componentDidUnmount(){
    AppStateIOS.removeEventListener('change', this._onAppPaused);
  }
  onAppPaused(event){
  }
}

var PureRenderMixin = require('react-addons-pure-render-mixin');
React.createClass({
 mixins: [PureRenderMixin],

 render: function() {
  return <div className={this.props.className}>foo</div>;
 }
});

//Enhance.js
import { Component } from "React";

export var Enhance = ComposedComponent => class extends Component {
  constructor() {
    this.state = { data: null };
  }
  componentDidMount() {
    this.setState({ data: 'Hello' });
  }
  render() {
    return <ComposedComponent {...this.props} data={this.state.data} />;
  }
};
//HigherOrderComponent.js
import { Enhance } from "./Enhance";

class MyComponent {
  render() {
    if (!this.data) return <div>Waiting...</div>;
    return <div>{this.data}</div>;
  }
}

export default Enhance(MyComponent); // Enhanced component

class AutoloadingPostsGrid extends React.Component {
  render() {
    var {
      className,
      ...others, // contains all properties of this.props except for className
    } = this.props;
    return (
      <div className={className}>
        <PostsGrid {...others} />
        <button onClick={this.handleLoadMoreClick}>Load more</button>
      </div>
    );
  }
}

<div {...this.props} className="override">
  …
</div>

<div className="base" {...this.props}>
  …
</div>