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加载大图如何优化

in Technique[技术] by (71.8m points)

当页面加载大图，只显示上行，下行变为灰色这种情况该如何处理？

我的思路是拿到图片的size，大概为2M，加载到20%的时候，可不可以通过开发控件 拿到2m的20% 也就是400K，400K和2m图大小不一样，自己写个reloading方法，检测过程大概会消耗60毫秒左右，完整加载一张图片大概在3000ms左右，如果我在前60ms就检测到图片没有加载出来，那就有50的机会去重新加载，如果50次都加载不出来，img onerror在更换图片，
大佬们怎么用代码实现


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by (71.8m points)

切割成多个 前端拼接


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