document.addEventListener('DOMContentLoaded', () =>{ const lazyImages= Array.from(document.querySelectorAll('img.lazy'));if('IntersectionObserver'inwindow && 'IntersectionObserverEntry'inwindow && 'intersectionRatio'inwindow.IntersectionObserverEntry.prototype) {//Define the observerlet lazyImageObserver =n...
然后再html中调用(body中的内容)如: 123456789varimgs=document.getElementsByClassName('lazy-load')10lazyload(imgs)//用于刚打开页面时,显示图片11window.onscroll=function(){//当滑动滚动条时进行懒加载12lazyload(imgs)13}1415
classList.remove("lazy-load"); imageObserver.unobserve(image); } }); }); lazyloadImages.forEach(function(image) { imageObserver.observe(image); }); } else { let lazyloadThrottleTimeout; lazyloadImages = document.querySelectorAll(".lazy-load"); function lazyload() { if(lazyloadThrottleTime...
entries.forEach((entry)=>{//logic for handling interstionif(entry.isIntersecting) { let lazyImage=entry.target lazyImage.src=lazyImage.dataset.src lazyImage.srcset=lazyImage.dataset.srcset lazyImage.classList.remove('lazy') lazyImageObserver.unobserve(lazyImage) } }) })//What to observelazyIm...
(entry)=>{if(entry.isIntersecting){// Load the image when it comes into the viewportentry.target.src=entry.target.dataset.src;observer.unobserve(entry.target);// Unobserve the image after it's loaded}});});// Observe each lazy imagelazyImages.forEach((image)=>{observer.observe(image);...
If you want to control exactly when lazy-loaded images are downloaded, then you will have to use JavaScript. Lazy Loading Images Using JavaScript Now we will learn how to use JavaScript to load images lazily. This will give us more control over the whole process. If you think that the def...
实现思路:先把img的src指向一个小图片,图片真实的地址存储在img一个自定义的属性里,,等到此图片出现在视野范围内了,获取img元素,把data-src里的值赋给src。 【1】获取窗口、窗口滚动和元素距离窗口顶部的偏移高度,计算元素是否出现在窗口可视范围内 function isShow($el){ var winH = $(window)....
你需要确保你要么设置高度和宽度 prop 或占位符到你的图像，这应该有助于解决这个问题，因为所有的图像...
lazy->loadImages(); To destroy the plugin and stop lazyloading usedestroy(). lazy->destroy(); Note thatdestroy()does not load the out of viewport images. If you also want to load the images useloadAndDestroy(). lazy->loadAndDestroy(); ...
Lazy loading delays the loading of elements, such as images, until required. Instead of loading all images when a page loads, lazy loading only loads the images that are currently visible or near the user's viewing area. This improvement in website performance decreases the initial load time ...