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CBS老传统了，他们宣布一口气续订11部节目，包括剧集《天堂执法者 Hawaii Five-0》第九季。Let's define another initEvent function, which makes all ordinary objects have the function of publishing and subscribing, as follows:MDT team members can share their learning and practical experiences through meetings or networks, learn together and make common progress.马氏声色俱厉，吴有才又岂是对手，三言两语之间便偃旗息鼓，默不作声。流浪狗小七为报当年的救命之恩进入恩人欧叶所在的宠物度假村，却想不到欧叶早已经不记得小七。小七的“认主”行为给欧叶带来无穷无尽的麻烦，可在爱狗的度假村总裁戴维的压力下，欧叶又不得不试着与小七相处。小七因为欧叶对度假村搜救员鲍宇的追求生出嫉妒心，处处和鲍宇作对。在小七的努力下，欧叶终于记起它，并帮它实现了与宠物乐园“明星犬”边牧Mary同台表演的梦想。小七与鲍宇渐渐成为好朋友，鲍宇发现小七的搜救犬潜质，开始训练小七搜救。在小七的联系下，欧叶与鲍宇产生感情。一个国际水下文物盗窃集团欲盗捞度假村海域沉船中的文物，小七联合欧叶、鲍宇和宠物乐园的其他动物与住进度假村的盗贼斗智斗勇，成功挫败对方。小七加入搜救队，最终成长为一只优秀的搜救犬。From the above command class code, we can see that any operation has an execute method to perform the operation. The above code uses traditional object-oriented programming to implement the command mode. The procedural request call of the command mode is encapsulated in the execute method of the command object. Have we found the above writing code a little cumbersome? We can do this using the callback functions in javascript, In object-oriented, The receiver of the command mode is saved as an attribute of the command object, and the command execution operation is agreed to call the command.execute method. However, if we use the callback function, then the receiver is closed in the environment where the callback function is generated, and the execution operation will be simpler. Only the callback function can be executed. Let's look at the following code: