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In web development, Picture preloading is a common technique, If you set the src attribute directly to the img tag node, If the picture is larger, Or if the network speed is relatively slow, Before the picture is loaded, The picture will be a blank scene for a period of time. This is not good for the user experience, so at this time we can use a loading loading picture as a placeholder to prompt the user that the picture is being loaded before the picture is loaded. After the picture is loaded, we can directly assign a value to the picture. The following code is as follows when we do not use proxy mode to preload pictures:Load Module by Path他听刘三顺这样说，只当他跟锦鲤见面的事被发现了。The following command will play a sound! Each command has two or three sounds. The voice will vary according to your role.远藤贤一为什么要做这种事情？记者贝茜·布鲁姆到监狱采访死刑犯大卫·戈尔。大卫曾是位受人尊敬的大学哲学教授，也是一名死刑的坚决反对者，但却因被控强奸和谋杀而面临死刑。 贝茜采访过程中对法庭的审判产生质疑，她决定亲自调查事情真相还大卫清白。原来，大卫的一名女学生曾表明“愿意做任何事”使自己期末成绩及格，但正直的大卫拒绝了她并间接导致女学生被退学。为此，女学生以强奸罪名起诉大卫。大卫虽然没有因此进监狱，但名誉尽毁，妻儿都离开了他。大卫终日酗酒。不久，朋友康丝坦斯·哈拉维遭人谋杀。种种证据对大卫极其不利，大卫被判谋杀判处死刑。贝茜历经千辛万苦终于查出了令人震惊的真相。他转而又望向那十艘桨帆船，不禁微微颤抖，全舰向西偏北35°转向，直排列队。