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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:221. X.X.281884年法国欲吞安南（即越南），夺我西南。清廷畏于压力，准备放弃安南，黑旗军首领刘永福为保桑梓，拒不听旨，与朝廷传旨小官唐景崧并肩战斗，率兵大破法军。李鸿章怀有私心，匿捷不报，反而夸大法国实力，渲染失败。清廷签下不平等条约。使中法战争“不败而败”。唐景崧因功升任台湾道，刘永福则率领黑旗军改编为官军，任南澳岛总兵。转眼十年，日本野心毕露，海陆两路进攻中国。李鸿章为保实力，欲与之议和，结果水师全军覆没，继而签订了卖国的《马关条约》。台湾军民，群情激奋。唐景崧为保官禄，唯命与朝廷。而刘永福率军渡台，团结台湾志士和同胞，坚决血战保台，不幸，台湾沦陷了，但台湾人民抗击日军的斗争延续多年。回归祖国的信念一如既往。是铁心兰。(5) Ships engaged in mine clearance operations;胡琴太俗气，难脱市井之味。Ambulances arrived and found that the female victim had a 4-to 5-inch wound under her navel, which was injured by a sharp weapon. Her belly was cut open, showing her fat.