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Examples from "Making Sense of React Hooks"
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| import React from "react"; | |
| import ReactDOM from "react-dom"; | |
| import { useWindowWidth } from "./wrapper"; | |
| function MyResponsiveComponent({ width }) { | |
| return <div className="App">Window width: {width}</div>; | |
| } | |
| const App = useWindowWidth(WindowResize); | |
| const rootElement = document.getElementById("root"); | |
| ReactDOM.render(<App />, rootElement); |
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| import React from "react"; | |
| export function useWindowWidth(Wrapper) { | |
| return class Media extends React.PureComponent { | |
| constructor(props) { | |
| super(props); | |
| this.state = { width: window.innerWidth }; | |
| } | |
| componentDidMount() { | |
| window.addEventListener("resize", this.handleResize); | |
| } | |
| componentWillUnmount() { | |
| window.removeEventListener("resize", this.handleResize); | |
| } | |
| handleResize = () => { | |
| this.setState({ width: window.innerWidth }); | |
| }; | |
| render() { | |
| return <Wrapper width={this.state.width} />; | |
| } | |
| }; | |
| } |
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