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index6.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<script type='text/javascript' src="./dist/React.js"></script>
<!-- <script type='text/javascript' src="./react.js"></script>
<script type='text/javascript' src="./react-dom.js"></script>-->
<script type='text/javascript' src="./lib/ReactPropTypes.js"></script>
<script type='text/javascript' src="./lib/babel.js"></script>
</head>
<body>
<div id='root' class="root">
</div>
<script type='text/babel'>
// bug说明：更新Hello的state不应该触发componentWillReceiveProps。
if (!window.ReactDOM) {
window.ReactDOM = React;
}
var PropTypes = ReactPropTypes
class ListViewDemo extends React.Component {
static childContextTypes = {
testItems: PropTypes.array
}
constructor(props) {
super(props);
this.state = {
testItems: [1,2,3]
};
}
getChildContext() {
return { testItems: this.state.testItems };
}
render() {
return (
<div>
<ul>
{this.state.testItems.map(function(el){
return <li>{el}</li>
})}
</ul>
<Hello />
</div>
);
}
}
console.log("======")
class Hello extends React.Component {
static contextTypes = {
testItems: PropTypes.array
}
constructor(props) {
super(props);
this.state = {
hello: "world"
};
}
componentWillReceiveProps(nextProps) {
console.log("componentWillReceiveProps");
console.log(this.context);
}
componentDidUpdate() {
console.log("componentDidUpdate");
console.log(this.context);
}
changeHello() {
this.setState({
hello: "woooo"
});
}
render() {
return (
<div onClick={this.changeHello.bind(this)}>
{this.state.hello}
</div>
);
}
}
ReactDOM.render(<ListViewDemo />, document.getElementById('root'));
</script>
</html>