Lazy loading加载没有缓冲,滚动即会触发新的图片资源加载。 Lazy loading加载在窗口resize尺寸变化时候也会触发,例如屏幕高度从小变大的时候。 Lazy loading加载也有可能会先加载后面的图片资源,例如页面加载时滚动高度很高的时候。 参考链接 Lazy loading - Web 性能 | MDN Lazy loading via at
What does the HTML img loading="lazy" attribute do? By default, all images on a page are loaded as soon as the user opens the page. Setting the loading attribute to lazy can defer fetching images and iframes until the user scrolls near the element. <img src="image.png" loading="...
Step 1. Using Native Lazy Loading Add the loading attribute to <img> tags html <img src="image.jpg" alt="Lazy Loaded Image" loading="lazy"> Step 2. Using JavaScript with Intersection Observer HTML Structure: html <img class="lazy" data-src="image.jpg" alt="Lazy Loaded Image"> 3. ...
Step 1. Using Native Lazy Loading Add the loading attribute to <img> tags html <img src="image.jpg" alt="Lazy Loaded Image" loading="lazy"> Step 2. Using JavaScript with Intersection Observer HTML Structure: html <img class="lazy" data-src="image.jpg" alt="Lazy Loaded Image"> 3. ...
One way to implement lazy loading is to use the HTML attribute loading in an image tag. Addingloading="lazy", as in the example below, tells the browser to wait to load the image until the user scrolls close to it: <img src="example.com/image" alt="example image" width="100" heigh...
In this lesson, you'll learn how to use the loading="lazy" attribute available on images and iframes to lazily load below the
auto: Default lazy-loading behavior of the browser, which is the same as not including the attribute. lazy: Defer loading of the resource until it reaches acalculated distancefrom the viewport. eager: Load the resource immediately, regardless of where it's located on the page. ...
<img src="image.jpg" loading="lazy" alt="Lazy loaded image"> Markup Copy This will load the image only when it comes into the viewport 2. Lazy Loading Iframes Similarly, you can lazy load iframes using the loading attribute: <iframe src="video.html" loading="lazy"></iframe> Markup ...
幸运地是,针对这种设想,HTML国际标准组织正在设法将其变成标准的一部分。 Loading AttributeThe loading attribute allows the browser to defer loading of images/iframes that are off-screen until the user scrolls near them. Indicates if the element should be loaded lazily (loading="lazy") or loaded imm...
html In this lesson, you'll learn how to use theloading="lazy"attribute available on images and iframes to lazily load below the fold images, which saves bandwidth and increases the load time performance of web pages. You'll also learn how to prevent images from lazy loading if necessary,...