React.js v0.13 changes and beyond

Transcript

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6. http://facebook.github.io/react/blog/2015/03/10/react-v0.13.html

7. http://blog.koba04.com/post/2015/03/05/react-js-v013-changes/

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   $MBTTFT class Hello extends React.Component { constructor(props) { super(props); this.state

   = { count: 0 };
 } static get propTypes() { title: React.PropTypes.string.isRequired } onClick() { this.setState({ count: this.state.count + 1 }) } render() { return ( <div> <p>{this.props.title}</p> <button onClick={this.onClick.bind(this)}>click</button> <p>{this.state.count}</p> </div> ); } }

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    Don't set .props.level of the React component. … var title = <title level={1} />; if (this.state.isImportant) title.props.level = 2; };

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    else { return <Foo bar={false} />; } or var props = { bar: false }; if (shouldUseFoo) { props.foo = 10; props.bar = true; } return <Foo {...props} />;

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    + 1}) this.setState({count: this.state.count + 1}) // state.count will render as 1 console.log(this.state.count) // 0 this.setState(function(state, props) { return {count: state.count + 1} }); this.setState(function(state, props) { return {count: state.count + 1} }); // state.count will render as 2

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    VQEBUFʹͳΔ componentDidMount() { console.log(this.state.count) // 0 this.setState({

    count: this.state.count + 1 }) this.setState({ count: this.state.count + 1 }) console.log(this.state.count) ɹ// v0.12 is 2 ɹ// v0.13 is 0 }

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    { this.setState({ // text: this.refs.inputText.getDOMNode().value text: React.findDOMNode(this.refs.inputText).value }); } render() { return( <div> <input type=“text” ref=“inputText” /> <button onClick={this.onClick.bind(this)}>click</button> </div> ); } }

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    1BSFOU const p = <p>title</p>; class Hoge extends React.Component {

    render() { return ( <div> {p} <span>hello</span> </div> ); } } span: owner is Hoge, parent is div ! Hoge p: owner is null, parent is div ! Hoge

24. $POUFYU const Parent React.createClass({ static get childContextTypes() { return {

    name: React.PropTypes.string } } getChildContext() { return { name: ‘parent’ } } render() { return <Child /> } } // Child render <GrandChild /> class GrandChild extends React.Component { static get contextTypes() { return { name: React.PropTypes.string } } render() { <div>{this.context.name}</div> } }

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    get childContextTypes() { return { name: React.PropTypes.string } } getChildContext() { return { name: ‘parent’ } } render() { return <div>{child}</div> } } class Child extends React.Component { static get contextTypes() { return { name: React.PropTypes.string } } render() { <div>{this.context.name}</div> } } React.render(<Parent />, document.getElementById(‘app’)); // Warning: owner-based and parent-based contexts differ

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54. http://facebook.github.io/react/blog/2014/03/28/the-road-to-1.0.html

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