Guide to creating a dynamic amount of slides in a React carousel for optimal responsiveness

Question

Guide to creating a dynamic amount of slides in a React carousel for optimal responsiveness

Looking for a solution to adjust the number of elements displayed in my React Carousel based on available size? I have a React Carousel that currently shows 3 elements at one time. Here is the code snippet:

const RCarousel = ({items}) => {
  const numItems = 3;

  return (
    <Carousel
      numItemsPerView={numItems}
    >
      {
        items.map(
          (item) => <Item item={item} />
        )
      }
    </Carousel>
  )
}

I am interested in changing the value of numItems to 2 when the RCarousel is at "tablet size", and to 1 when it is at "mobile size". However, given that RCarousel's width may vary depending on the window size, any advice on how to achieve this dynamically? :)

css reactjs media-queries carousel responsive

Answer 1

Answer №1

To determine the window size, you can utilize window.innerWidth and window.innerHight in your code. Once you have obtained the dimensions, you can dynamically adjust them. One suggestion is to store the number of items in a state variable using useState and employ useEffect for updating it based on certain conditions.

const [numItems, setNumItems] = useState(3);
const windowWidth = window.width;
useEffect(() => {
    if (windowWidth > 800) {
        setNumItems(3);
    } else {
        setNumItems(1);
    }
}, [windowWidth])

Answer 2

To determine the window size, you can utilize window.innerWidth and window.innerHight in your code. Once you have obtained the dimensions, you can dynamically adjust them. One suggestion is to store the number of items in a state variable using useState and employ useEffect for updating it based on certain conditions.

const [numItems, setNumItems] = useState(3);
const windowWidth = window.width;
useEffect(() => {
    if (windowWidth > 800) {
        setNumItems(3);
    } else {
        setNumItems(1);
    }
}, [windowWidth])

Answer 3

Answer №2

Enhancing @szczocik's solution, I managed to resolve it by implementing the following steps:

Established a custom hook for fetching window dimensions

windowSize.js

import {useState, useEffect} from 'react'

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

  useEffect(() => {
    if (typeof window === 'undefined') return; //specifically designed for Gatsby or webpack-based applications
    
    const handleResize = () => {
      setWindowSize({
        width: window.innerWidth,
        height: window.innerHeight,
      });
    }
    
    window.addEventListener("resize", handleResize);
    
    handleResize();
    
    return () => window.removeEventListener("resize", handleResize);
  }, []);

  return windowSize;
}

export default useWindowSize;

mycomponent.js

  const windowSize = useWindowSize();

  useEffect(() => {
    const width = windowSize.width;

    if (width >= 1200) {
      if (numItems !== 3) {
       setNumItems(3);
      }
    } else if (width > 900) {
      if (numItems !== 2) {
        setNumItems(2);
      }
    } else {
      if (numItems !== 1) {
        setNumItems(1);
      }
    }
  }, windowSize)

Answer 4

Enhancing @szczocik's solution, I managed to resolve it by implementing the following steps:

Established a custom hook for fetching window dimensions

windowSize.js

import {useState, useEffect} from 'react'

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

  useEffect(() => {
    if (typeof window === 'undefined') return; //specifically designed for Gatsby or webpack-based applications
    
    const handleResize = () => {
      setWindowSize({
        width: window.innerWidth,
        height: window.innerHeight,
      });
    }
    
    window.addEventListener("resize", handleResize);
    
    handleResize();
    
    return () => window.removeEventListener("resize", handleResize);
  }, []);

  return windowSize;
}

export default useWindowSize;

mycomponent.js

  const windowSize = useWindowSize();

  useEffect(() => {
    const width = windowSize.width;

    if (width >= 1200) {
      if (numItems !== 3) {
       setNumItems(3);
      }
    } else if (width > 900) {
      if (numItems !== 2) {
        setNumItems(2);
      }
    } else {
      if (numItems !== 1) {
        setNumItems(1);
      }
    }
  }, windowSize)

Guide to creating a dynamic amount of slides in a React carousel for optimal responsiveness

Answer №1

Answer №2

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