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庄稼一枝花，全靠肥当家。…,其中不仅仅包括了军事实力。A1.1. 7 Autonomic nerve examination外表帅气、作风轻浮的马桶垫设计师伢叔和妻子离婚后，与女儿小敏一起生活。某天，在一次日常的厕所蹲坑中伢叔竟然被马桶吸了进去，稀里糊涂地成为了超级英雄，被赋予了从外星人手中拯救地球的重任。而他成为超级英雄的代价就是从原本英俊帅气的型男变成肥胖油腻的大叔。就这样，伢叔开始了与众多非典型外星人鸡飞狗跳的日常……　　在生与死面前，仅剩的六名姐妹最后看了一眼深爱的大地，手挽手，拉响了手榴弹。Last sentence, keep a low profile and study hard. See you next time.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: