useWindowScroll

useWindowScroll

The useWindowScroll hook is a custom React hook that allows you to get the current vertical scroll position of the window. It provides the scroll position as a single value (scrollY) and updates it whenever the window is scrolled.

Usage

import { useState, useEffect } from "react";
function useWindowScroll() {  const [scrollY, setScrollY] = useState(0);
  useEffect(() => {    function handleWindowScroll() {      setScrollY(window.scrollY);    }
    window.addEventListener("scroll", handleWindowScroll);
    return () => {      window.removeEventListener("scroll", handleWindowScroll);    };  }, []);
  return scrollY;}
export { useWindowScroll };

To use the useWindowScroll hook, follow these steps:

Import the hook and any other necessary dependencies:

import { useWindowScroll } from "zop-hooks";

Invoke the useWindowScroll hook within a functional component:

function MyComponent() {  const scrollY = useWindowScroll();
  // Access the scroll position value  // scrollY represents the vertical scroll position
  // Rest of your component code  // ...}

Return Value

The useWindowScroll hook returns the current vertical scroll position (scrollY) as a number.

Example

Here's an example of how you can use the useWindowScroll hook in a functional component:

import { useWindowScroll } from "./path/to/useWindowScroll";
function MyComponent() {  const scrollY = useWindowScroll();
  return (    <div>      <p>Scroll Y: {scrollY}px</p>    </div>  );}

In this example, the component displays the current vertical scroll position of the window in pixels.

Notes

• The useWindowScroll hook uses the useState and useEffect hooks from React to manage state and perform side effects, respectively.
• The initial scroll position is obtained when the hook is first invoked, but subsequent updates are triggered only when the window is scrolled. This optimization helps reduce unnecessary re-renders.
• The event listener for window scroll is added and removed in the useEffect hook's cleanup function to ensure proper handling of the event.

Remember to include the necessary import statements and adjust the file paths accordingly when using the useWindowScroll hook in your project.

That's it! You can now utilize the useWindowScroll hook to get the current vertical scroll position of the window in your React components.