![[流泪]](http://lf-web-assets.juejin.cn/obj/juejin-web/xitu_juejin_web/img/jj_emoji_6.dde0d83.png)
俺端茶递水样样精通
获得徽章 0
- 利用IntersectionObserver api实现图片懒加载
function lazyLoad(element) {
const observer = new IntersectionObserver((entries, observer) => {
entries.forEach(entry => {
if (entry.isIntersecting) {
const img = entry.target;
img.src = img.dataset.src;
observer.unobserve(img);
}
});
});
observer.observe(element);
}
const lazyImage = document.querySelector('img');
lazyLoad(lazyImage);展开评论5
![[看]](http://lf-web-assets.juejin.cn/obj/juejin-web/xitu_juejin_web/img/jj_emoji_97.39cdc9f.png)
![[呲牙]](http://lf-web-assets.juejin.cn/obj/juejin-web/xitu_juejin_web/img/jj_emoji_2.cd1e2bd.png)