问题
Browsers started recently supporting native lazy loading via the loading attribute.
However, many image heavy sites like unsplash.com and pexels.com don't use native lazy loading.
Obviously, not all browsers support native lazy loading, but what are the risks of using loading="lazy" in addition to other options for lazy loading? That is, if you accept that unsupported browsers won't lazy load images, is there any downside to adding loading="lazy" to img tags?
来源：https://stackoverflow.com/questions/61314750/risks-of-native-lazy-loading-with-the-html-loading-attribute