What are the differences between Intersection Observer and scroll events?

What are the differences between Intersection Observer and scroll events?

Intersection Observer is a modern API that allows you to asynchronously observe changes in the intersection of a target element with an ancestor element or the viewport. Scroll events, on the other hand, are triggered every time the user scrolls, which can lead to performance issues if not handled properly.

Which one is better for performance?

Generally, Intersection Observer is better for performance because it reduces the number of events fired and allows for more efficient handling of visibility changes.

Can I use both together?

Yes, you can use both together. For example, you might use Intersection Observer to detect when an element comes into view and then trigger scroll events for additional effects.

Are there any browser compatibility issues?

Intersection Observer is supported in most modern browsers, but you should check compatibility for older browsers. Scroll events are widely supported.