JSFiddle - React, Tailwind, and code Playground
HTML
<div>Faça scroll com o mouse aqui...</div>
<div id="roda"></div>
JavaScript
var roda = document.getElementById('roda');
// escrever na página
function report(what, ammout) {
roda.innerHTML = 'Valor da roda: ' + ammout;
}
// função para normalizar o valor da roda
function callback(event) {
var normalized;
if (event.wheelDelta) {
normalized = (event.wheelDelta % 120 - 0) == -0 ? event.wheelDelta / 120 : event.wheelDelta / 12;
} else {
var rawAmmount = event.deltaY ? event.deltaY : event.detail;
normalized = -(rawAmmount % 3 ? rawAmmount * 10 : rawAmmount / 3);
}
report('roda', normalized);
}
var event = 'onwheel' in document ? 'wheel' : 'onmousewheel' in document ? 'mousewheel' : 'DOMMouseScroll';
window.addEventListener(event, callback);