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- import React, { useState, useEffect } from "react";
- const MyComponent = () => {
- const [width, setWidth] = useState(window.innerWidth);
- useEffect(() => {
- const handleResize = () => setWidth(window.innerWidth);
- window.addEventListener("resize", handleResize);
- return () => window.removeEventListener("resize", handleResize);
- }, []);
- render() {
- return (
- <h1>{this.state.width}</h1>
- );
- }
- }
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