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import React, { useState, useEffect } from 'react';
function App() {
const [windowWidth, setWindowWidth] = useState(window.innerWidth);
useEffect(() => {
const handleResize = () => {
setWindowWidth(window.innerWidth);
};
window.addEventListener("resize", handleResize);
return () => {
window.removeEventListener("resize", handleResize);
};
}, []);
return (
<div>
<p>Window width: {windowWidth}</p>
</div>
);
}
export default App;
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const Component = () => {
const { height, width } = useWindowDimensions();
return (
<div>
width: {width} ~ height: {height}
</div>
);
}
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import { useState, useEffect } from 'react';
function getWindowDimensions() {
const { innerWidth: width, innerHeight: height } = window;
return {
width,
height
};
}
export default function useWindowDimensions() {
const [windowDimensions, setWindowDimensions] = useState(getWindowDimensions());
useEffect(() => {
function handleResize() {
setWindowDimensions(getWindowDimensions());
}
window.addEventListener('resize', handleResize);
return () => window.removeEventListener('resize', handleResize);
}, []);
return windowDimensions;
}