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[前端开发] 前端如何只显示最后三行？

发表于
文本内容是生成的，很慢，大概 1-2 分钟
所以需要作一个 loading 页面，展示出内容正在生成。这个页面也会放置其它的内容，广告、友情提示、推荐
目前的设想，是前端向后端轮询，展示最后三行，也就是最新生成的文本
轮询好说，但怎么展示最后三行呢？
或者大家对于这个 loading 页面的设计，有没有别的好建议？

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