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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:Python Reference Manual: This book is only used as a reference book. When you encounter a problem, turn over the book and consolidate it (of course, the fact may be that you went directly to Google). This kind of book does not need to be brushed from beginning to end, but only needs to be checked and filled (e-books are fine)陈启现在要准备的，就是他的下一本武侠。达英和正硕交往已经六年多了，达英在朋友与家人的双重压力下很想早点结婚，但正硕却迟迟不肯结婚。成英因教授引荐进入一家公司做实习生，遇到从美国来的帅哥酷男俊元。正硕和兰姬终于步入结婚礼堂，达英心有不甘又能奈何。达英享受单身生活，轻松愉快找工作却处处碰壁、心灰意冷，失望之极，父亲无意间得知达英已经离职，拿了一笔钱给达英出国旅行……少女时代泰妍将担任预计今年上半年播出的女团回归大战Mnet《Queendom 2》的主持人。吕馨突然说道：小鱼儿这个名字就是取漏网之鱼的意思。