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TypeError: The CanvasRenderingContext2D.webkitBackingStorePixelRatio getter can only be used on instances of CanvasRenderingContext2D

ios10：

CanvasRenderingContext2D.prototype.webkitBackingStorePixelRatio 报异常

posted on 2016-09-18 15:14  jzm17173  阅读(404)  评论(0)    收藏  举报

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