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公主配他不是足够，是太多了，他高攀不起。The above is just a synchronous chain of responsibilities, We let each node function return a specific value "nextSuccessor" synchronously, To indicate whether to pass the request to the next node, we will often encounter AJAX asynchronous requests in our development. After the request is successful, we need to do something so-and-so. At this time, if we apply the above synchronous request again, it will not take effect. Let's understand and use asynchronous responsibility chain to solve this problem. We add another prototype method Chain.prototype.next to the Chain class to manually pass the request to the next node in the responsibility chain.范亚父不在了，凡事只能依靠自己。一切就绪，他才回头道，世伯，可以开了NO! The longer the code, the more classifiers need to be trained, and the higher the calculation and storage overhead. On the other hand, for a limited number of classes, the number of possible combinations is limited, and when the code length exceeds a certain range, it loses its meaning.再说，他平日也没少用功，底子还好，说不定真像你说的，能中举呢。