What i want to do is have a user upload his image. When its complete it will display the image on the same page w/o refreshing. Here is the part i need to figure out, how do i have the user select a box in the image? so i can crop it when the user is done? (using ImageMagick).What i want to do is have a user upload his ima
阅读背景：
在图像上画一个框，仅限javascript？
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