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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:听到工作人员的解释，李聪云顿时一脸黑线，这什么和什么。　　自称科学家的男人启动了巨大的机器，上空竟出现了倒立的另一个世界。另一边，EX-AID的世界也发生同样的状况。有天空之壁的世界正逐渐的坠落到 EX-AID的世界，距离两个世界冲突碰撞的时间还剩下24小时。世界末日的倒数开始…！这个月初，我们就在准备提高作者的保障，大力开发小说的周边版权，留在启明的作者肯定不会吃亏的。一个项目牵扯出多年前的情感瓜葛，尘封3333天的绝美恋情在失忆后重逢。然而，参与这个项目的人都有着自己的小心思，看似偶然的失忆，却不只是单纯失忆那么简单。戚继光点点头，无意深聊，转望赵文华，赵大人，军事如何？听他讲吧。