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react-intersection-observer. React implementation of the Intersection Observer API to tell you when an element enters or leaves the viewport. Contains both a Hooks, render props and plain children implementation.
25 de jul. de 2023 · The react-intersection-observer package provides a way to implement this API in a React project. In this guide, we will explore how to utilize this library to monitor the visibility of different sections on a webpage and dynamically execute actions on the page header.
- Initialization
- Using React.js
- Hooking It Up
- Final Words
The intersection observer object constructor requires two arguments: 1. Callback function 2. Options Just like that we are ready to see some action but first we need to know what each option means, the options argument is an object with the following values: 1. root: The element that is used as the viewport for checking visibility of the target. Mu...
Now let's see an implementation of the intersection observer API using react. 1. Start with a reference to the element we want to observe, use the react hook useRef. 2. Create a state variable isVisible, we are gonna use it to display a message whenever our box is in the viewport. 3. Declare a callback function that receives an array of Intersectio...
Let's now implement the same code we just did before but separating all the logic into a new hook called useElementOnScreen. 1. Create a new function called useElementOnScreen with the parameter options 2. Move useRef, useState and the entire useEffectinside our new shiny hook. 3. Now the only thing missing in our hook is the return statement, we p...
Thanks for reading this, Hopefully it helped someone getting started with the IO API using react, stay safe ❤️!
1 de feb. de 2024 · February 1, 2024. Written By Vishwas Gopinath. In this blog post, we'll explore how to use the Intersection Observer in a React app. We'll recreate the appealing secondary nav animations found on Linear's landing page — the reveal and highlight animations that occur on scroll.
React Intersection Observer is a React component, acting as a wrapper for the IntersectionObserver API. It is fully declarative and takes care of all the imperative parts for you. React Intersection Observer is good at: reusing instances: comparing the passed options; performance: chooses smartly when to re-render and when to re-observe
28 de mar. de 2024 · Next, we're going to use the useEffect hook to set up an IntersectionObserver. This is a browser API that lets us know when an element becomes visible or hidden on the page. But before we can use the API, we need to get the element we want to observe. To do this, we used the useRef hook to create a reference to the element.
React implementation of the Intersection Observer API to tell you when an element enters or leaves the viewport. - react-intersection-observer/docs/Recipes.md at main · thebuilder/react-intersection-observer.
