Lazy loading of images

Background: Sometimes we don’t need to load all the pictures when we open a page. We hope that they will be loaded only when the pictures are to be displayed on the page. Taobao is a good example. When we slide the page, which picture should we slide to? Only one picture will be loaded, which saves the user's mobile phone traffic.

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@for (int i = 3; i < 22; i++) {  }

Only set src as the image address. src is the image. The style when loading

is not very simple!

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