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The first scheme is to use the general coding method to realize the preloading technology of the picture. First, create the imgNode element, Then when the method myImage.setSrc is called, a preloaded picture is given to the picture first, and when the picture is loaded, the img element is assigned a value. The second scheme is implemented by using proxy mode. MyImage function is only responsible for creating img elements, proxy function ProxyImage is responsible for setting loading pictures for the picture, and when the picture is really loaded, myImage.setSrc method in myImage is called to set the path of the picture. The advantages and disadvantages between them are as follows:Introduction: It can express your sad expression and make a "whine" sound.他娘，咱们是不能冒失了。刘邦笑道：兄长此来，情深意重，刘邦无以为报，先奉上酒水一杯。吸血鬼祖先Mikaelson家族的悲剧和胜利 迎来了新的《The Originals》乐章，照片(5张)