Vue如何监听滚动条

export default {
mounted() {
window.addEventListener("scroll", this.handleScroll, true);
},
methods: {
handleScroll(e) {
let scrollTop =
document.documentElement.scrollTop || document.body.scrollTop;
console.log(scrollTop);
},
},
};

Vue如何监听滚动条最先出现在Python成神之路。