js 监听滚动条停止滚动

let t1 = 0;
let t2 = 0;
let timer = null; // 定时器

// scroll监听
document.onscroll = function() {
  clearTimeout(timer);
  timer = setTimeout(isScrollEnd, 1000);
  t1 = document.documentElement.scrollTop || document.body.scrollTop;
}

function isScrollEnd() {
  t2 = document.documentElement.scrollTop || document.body.scrollTop;
  if(t2 == t1){
    console.log('滚动结束了')
  }
}