The above code: We use a parameter FN to pass it in, and if there is an instance of result, we will return it directly. Otherwise, the current getInstance function calls FN, and this pointer points to this FN function. After that, the return is saved in the result. Now we can pass a function in, whether it is to create div or iframe. In short, if this is the case, we can use getInstance to get their instance objects.夜幕降临，从太平洋中心好运岛飞往新加坡的大洋航空615次航班正准备起飞。由于近几年乘客锐减，该航班即将取消，此次也是这架飞机最后一次飞行。方木（辜承 饰）、沈吟（伊娜 饰）、刘夏（李晨浩 饰）等寥寥九位乘客走入机舱。机长查尔斯（艾德·维斯特维克 ED Westwick 饰）颇有些伤感和落寞地向乘客们通报了最后一次飞行的消息。孤独而漫长的旅程，乘客们相继睡去，花花公子刘夏不忘勾搭空姐杰西卡（江琳琳 饰）寻求艳遇。 夜色越来越浓，超级月亮升上高空，杰西卡竟然衣衫凌乱惨死机舱。死亡的恐怖氛围迅速蔓延，所有人都为各自的命运担忧，而神秘凶手却未打算就此罢休……《监狱学院真人版》讲述了东京郊外的私立八光学园的故事，这所为了培养大小姐的贵族学校从公元2011年4月开始正式改为了男女合校，首批入学的男子有五个人。 他们并不是全员都帅得一塌糊涂能够迷倒众生，甚至相貌属于很不起眼的类型。在身处周围1000位女生的女校范围内，这些男人能够克制住自己蓬勃的青春欲望 吗？主人公藤野清志等人的命运究竟如何呢？厦亿集团旗下酒店员工林晓美，接到任务寻求园艺大师李俊彦的帮助，因工作上的联系，个性迥异的两人，从互看不顺眼到彼此深入了解，渐渐萌生爱意。王凯英是晓美的追求者，为了追求晓美他费尽心机，但无论凯英如何陷害，都无法拆散晓美和俊彦，反而使两人的感情更加牢固。晓美家的饼店因意外而破产，但始终不放弃“诚信”的经营信念，在厦亿总裁李金河的帮助下，一家人重新出发，将店铺经营的越发红火。经过晓美的劝说，俊彦解开了与父亲金河的误会，重寻父子间的亲情。感情失意的凯英在赵天心的帮助下，重新振作并与晓美和俊彦成为朋友。在厦亿集团岌岌可危的时候，四人同心协力拯救了厦亿集团。经历诸多风雨磨难的晓美与俊彦，一起在厦门海边经营着咖啡馆，携手走向幸福的未来。3. Use object instead of string to record the current state, which makes the state switching more clear at a glance.Wuli Bridge, commonly known as "Anping Bridge", spans the bay between Anhai Town in Jinjiang and Shuitou Town in Nanan. It was built in Shaoxing, Song Dynasty, in the 8th year (1138 A.D., the photo year of Wuli Bridge) and was completed in 13 years. The stone pier Liang Shi Bridge built of granite is the leading long bridge in ancient China. It is known as "there is no bridge in the world and this bridge is long". It is well-known at home and abroad and has been announced by the State Council as the first batch of national key cultural relics protection units. The bridge is 2255 meters long and has 361 square, boat-shaped and semi-boat-shaped piers. The bridge deck is 3-3.8 meters wide and the bridge deck is 5-11 meters long, weighing up to 25 tons. Stone guardrails are on both sides. There are five pavilions on the bridge: the "Transcendent Pavilion" in the east of the bridge, the "Haichao Temple" in the west of the bridge, and the "Surabaya Pavilion" in the middle of the bridge. One road pavilion is set up at each end for tourists to rest. "Surabaya Pavilion", commonly known as "Zhongting", has a pair of couplets on the stone pillars in front of the pavilion: "There are Buddha Zongsi Buddha in the world, and there is no bridge in the world to grow this bridge". There are two stone carvings of generals. On the side of the pavilion, 14 inscriptions have been restored in past dynasties. At the western end of the bridge pavilion, there are inscriptions rebuilt in the Qing Dynasty, and at the eastern end there is a five-story hexagonal pavilion-style wooden-like white tower. After 800 years of vicissitudes, Anping Bridge has become a "land bridge". From 1980 to 1985, the state allocated funds for maintenance, and the original appearance of the Song Dynasty was restored.三十年代初，南方某城市有个贫民区叫猪鸡里，住的都是被有财有势的人压逼得猪狗不如的可怜人。为了达到自己不可告人目的，城中首富庄承和一帮达官显贵要强行拆除猪鸡里，在猪鸡里长大的苦孩子毓儿和庄承的养子留洋博士庄若龙不打不相识，在保护猪鸡里的过程成为了一对欢喜冤家，二人情愫渐生。但是这段感情却注定要经受考验，因为他们是仇家，因为有一连串的大阴谋要陆续登场。在国恨和家仇之间，毓儿和庄若龙发现个人的恩怨已毫无意义，他们放弃了报仇计划，一起连手对付勾结日本人的朱将军等人。一个将计就计的传奇故事，一段至纯至真的浪漫爱情，就这样伴着大时代的风雨飘摇，隆重登场......
