Observe the rect of a DOM element.
Installation
npm install @reach/observe-rect
# or
yarn add @reach/observe-rect
Usage
import observeRect from "@reach/observe-rect";
let node = document.getElementById("some-node");
let rectObserver = observeRect(node, rect => {
console.log("left", rect.left);
console.log("top", rect.top);
console.log("height", rect.height);
console.log("width", rect.width);
});
// start observing
rectObserver.observe();
// stop observing
rectObserver.unobserve();About
A lot of things can change the position or size of an element, like scrolling, content reflows and user input. This utility observes and notifies you when your element's rect changes.
Legal
MIT License Copyright (c) 2018-present, Ryan Florence