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react-ref-observe

v1.0.3

Published

Observe resizing and click outside for react components

Downloads

22

Readme

react-ref-observe

A React hooks for observing an element resizing and clicking outside

Usage

npm i react-ref-observe
import * as React from "react";
import { observeResize, observeClickOutside } from "react-ref-observe";

export const Observers = () => {
  const firstRef = React.useRef();
  const secondRef = React.useRef();
  const [clicks, setClicks] = React.useReducer(c => c + 1, 0);

  const firstSize = observeResize(firstRef);
  observeClickOutside([secondRef], setClicks);

  return (
    <>
      <div ref={firstRef}>
        width: {firstSize.width}, height: {firstSize.height}
      </div>
      <div ref={secondRef}>Clicks outside: {clicks}</div>
    </>
  );
};

API

observeResize(ref, callback)

Observes element resizing. Uses resize-observer-polyfill

  • ref - React reference to a DOM element
  • callback optional - callback function, taking argument {width, height}

Returns an object {width: Number, height: Number}

observeClickOutside(refs, callback)

Observes clicks outside an element

  • refs - Array of react references to DOM elements
  • callback - callback function, taking click or touch event argument