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tvN独幕剧2020 十部……戚继光表情何尝不是痛苦万分。轰……事不过三，这炮，终于会打了。"Bus Day Voucher"Agencies and their staff in violation of the relevant provisions, the medical security administrative department at the same level shall order it to make corrections; The directly responsible person in charge and other directly responsible personnel shall be given administrative sanctions; Those suspected of committing crimes shall be transferred by the administrative department to the public security organ or the supervisory organ according to law.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: