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Code as above; You can see, There are obvious shortcomings, For example, when I click on an element, I need to create a div. I click on the second element to create a div again, We frequently click on such and such elements, and they will frequently create div elements. Although we can remove pop-up codes when we click Close, it is not good for us to frequently create and delete them, especially for performance, and frequent operations on DOM will cause redrawing, etc., thus affecting performance. Therefore, this is a very bad habit. We can now use the monomer mode to realize the pop-up effect. We can instantiate it only once. The following code:杨长贵接着说道：一日两日，一年两年，咱们父母能拦着，时间长了，那些兵痞天天来，就算是母亲，也不一定能受得了的，为了耳根清净，门槛干净，难免就把翘儿送出去了。《甜蜜》讲述了都市女性田蜜（海清饰）由于丈夫破产去世，从一个养尊处优的富太太跌入生活谷底，在信托经理常胜（任重饰）的协助下，毅然扛起替丈夫偿还债务的重担后，一路拼搏成长赢得事业成功，并收获美满爱情的励志故事。*在Rebelde系列的官方音乐视频中，Y soy Rebelde在重复*偷窥中演唱。Rebelde 2022，仅在Netflix上发布。改编自美国同名青春电影。In order to make good use of the principle of composite reuse, we first need to distinguish the relationship between "Has-A" and "Is-A".