ahooks/es/utils/rect.js

react hooks library

const getScrollTop = (el) => {
    if (el === document || el === document.documentElement || el === document.body) {
        return Math.max(window.pageYOffset, document.documentElement.scrollTop, document.body.scrollTop);
    }
    return el.scrollTop;
};
const getScrollHeight = (el) => {
    return (el.scrollHeight ||
        Math.max(document.documentElement.scrollHeight, document.body.scrollHeight));
};
const getClientHeight = (el) => {
    return (el.clientHeight ||
        Math.max(document.documentElement.clientHeight, document.body.clientHeight));
};
export { getScrollTop, getScrollHeight, getClientHeight };