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[Feature] Picture 支持传入占位元素 #397

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fengzilong opened this issue Aug 31, 2021 · 0 comments

fengzilong commented Aug 31, 2021 •

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目前 Picture 支持传入 placeholder，但是必须是一个占位图片地址

假如我们有一个数量上千的品牌列表页，需要一次性展示，即使用了 Picture 的懒加载，但是并发几百个 1x1 占位图片请求，仍然会存在明显的卡顿，这里用虚拟窗口也可以解决，但相对比较复杂

针对上述这种大量图片的场景，希望 Picture 组件除了支持占位图片外，也可以支持传入占位元素(比如带背景色的 div)

如果没问题的话，我可以提个 PR

大概实现思路是判断 props.placeholder 的类型是字符串，还是 Rax 组件

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