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html5鼠標(biāo)拖動(dòng)(javascript鼠標(biāo)拖動(dòng))
mouseY tempY 鼠標(biāo)抬起事件設(shè)置dragging為false，clear移動(dòng)層#39#eventCanvas#39mouseupfunctione ifoptsdragAll else moveMapContextclearRect0， 0， 1100， 630；x = elem...