How to Load Images Like a Pro using HTML, CSS & JavaScript

You can use the loading attribute to lazy-load images without the need to write custom lazy-loading code or use a separate JavaScript library.

Either add an event listener, or have the image announce itself with onload. Then figure out the dimensions from there.

This attribute handles how an image will be loaded on a webpage. It accepts three string values, namely, auto, eager and lazy.

The HTML <img> tag is used to embed an image in a web page. Images are not technically inserted into a web page; images are linked to web pages. Image Map · A floating image · Try it Yourself · Images in Another Folder

The loading attribute specifies whether a browser should load an image immediately or to defer loading of off-screen images until for example the user scrolls ...

定义和用法. loading 属性指定浏览器是应立即加载图像还是延迟加载图像。 设置loading=lazy 只有鼠标滚动到该图片所在位置才会显示。

The HTMLImageElement property loading is a string whose value provides a hint to the user agent on how to handle the loading of the image ...

Lazy loading is a strategy to identify resources as non-blocking (non-critical) and load these only when needed. Critical rendering path · Navigation and resource timings

Lazy Loading Techniques for images. Images on a webpage can be loaded in two ways - using the <img> tag, or using the CSS `background` property.

Lazy loading 是廣為人知的網頁優化技巧，尤其應用在圖片上時能夠大幅減少效能和流量的浪費，目前也有許多圖片Lazy loading 的套件可以使用，甚至已經有瀏覽器內建 ...