vue 监听某个div垂直滚动条下拉到底部的方法

this.$nextTick(() => {
const el = document.querySelector('.act-not');
const offsetHeight = el.offsetHeight;
el.onscroll = () => {
const scrollTop = el.scrollTop;
const scrollHeight = el.scrollHeight;
if ((offsetHeight + scrollTop) - scrollHeight >= -1) {
// 需要执行的代码
}
};
});