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felipexperto / fx-dev

Um blog pessoal para disseminar conteúdo. Criado usando Gatsby.
https://www.fx.dev.br/
MIT License
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post: useWindowSize hook #30

Open felipexperto opened 3 months ago

felipexperto commented 3 months ago

Code:

import { useState, useEffect } from 'react';

export default function useWindowSize() {
  const [windowSize, setWindowSize] = useState({
    height: undefined,
    width: undefined,
  });

  useEffect(() => {
    function handleResize() {
      setWindowSize({
        height: window.innerHeight,
        width: window.innerWidth,
      });
    }

    window.addEventListener('resize', handleResize);

    handleResize();

    return () => window.removeEventListener('resize', handleResize);
  }, []);

  return windowSize;
}

Test:

import { useState, useEffect } from 'react';

export default function useWindowSize() {
  const [windowSize, setWindowSize] = useState({
    height: undefined,
    width: undefined,
  });

  useEffect(() => {
    function handleResize() {
      setWindowSize({
        height: window.innerHeight,
        width: window.innerWidth,
      });
    }

    window.addEventListener('resize', handleResize);

    handleResize();

    return () => window.removeEventListener('resize', handleResize);
  }, []);

  return windowSize;
}