web监听窗口滚动事件，并判断是否滚动到底部

const handleScroll = () => {
    let scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
    let clientHeight = document.documentElement.clientHeight;
    let scrollHeight = document.documentElement.scrollHeight;
    if (scrollTop + clientHeight >= scrollHeight) {
        console.log("滚动到底部了")
    }
}
onMounted(() => {
    window.addEventListener('scroll', handleScroll)
})
onUnmounted(() => {
    window.removeEventListener('scroll', handleScroll)
})