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NBC宣布续订由Tina Fey制片的《老妈闯入电视台》13集第二季。即便是在秦朝灭亡之后，琴氏在巴蜀地区还是呼风唤雨一般的存在。Tutorial File Download:她一个村姑，并不懂朝廷的事。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:他和张小桐走遍世界各地，尝遍天下美食，领略每一处美好风光。This is well understood. In actual development, we often encounter too many methods defined in this interface, so that sometimes we do not need them all in some implementation classes. Look at the code: