const imgs = document.getElementsByTagName(‘img’);const viewHeight = window.innherHeight || document.documentElement.clientHeight;let num = 0;function lazyLoad() {for (let i = num; i <= imgs.length; i++) { let distance = viewHeight - imgs[i].getBoundingClientrect().top; if (distance >= 0) { imgs[i].src = imgs[i].src.getAttritube(‘data-src’) num = i + 1; }}};window.addEventListener(‘scroll’, lazyLoad, false);
懒加载
January 21, 2019 · 1 min · jiezi