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当我使用react-router更改路由时,componentDidUpdate是否会触发?我修改了示例代码,似乎无法使其工作。React Router 4 componentDidUpdate not firing
我做了家庭组件日志一些文本,但它似乎没有解雇。任何帮助表示赞赏,谢谢!
代码:
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import './index.css';
import {
BrowserRouter as Router,
Route,
Link
} from 'react-router-dom'
const BasicExample =() => (
<Router>
<div>
<ul>
<li><Link to="/">Home</Link></li>
<li><Link to="/about">About</Link></li>
<li><Link to="/topics">Topics</Link></li>
</ul>
<hr/>
<Route exact path="/" component={Home}/>
<Route path="/about" component={About}/>
<Route path="/topics" component={Topics}/>
</div>
</Router>
)
class Home extends React.Component {
render() {
return (<div>
<h2>Home</h2>
</div>);
}
componentDidUpdate() {
console.log("Updated!");
}
}
const About =() => (
<div>
<h2>About</h2>
</div>
)
const Topics = ({ match }) => (
<div>
<h2>Topics</h2>
<ul>
<li>
<Link to={`${match.url}/rendering`}>
Rendering with React
</Link>
</li>
<li>
<Link to={`${match.url}/components`}>
Components
</Link>
</li>
<li>
<Link to={`${match.url}/props-v-state`}>
Props v. State
</Link>
</li>
</ul>
<Route path={`${match.url}/:topicId`} component={Topic}/>
<Route exact path={match.url} render={() => (
<h3>Please select a topic.</h3>
)}/>
</div>
)
const Topic = ({ match }) => (
<div>
<h3>{match.params.topicId}</h3>
</div>
)
ReactDOM.render(
<BasicExample />,
document.getElementById('root')
);