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For example, in the back-end system, There are tabular data, Each piece of data is preceded by a check box button, When you click the check box button, After obtaining the id, it needs to be passed to the server to send an ajax request. The server needs to record this data, To request, if we send an http request to the server every time we click, For the server, the pressure is relatively high and the network requests are frequent. However, if the real-time data of the system is not very high now, we can collect all ID for a period of time (e.g. 2-3 seconds) through a proxy function and send AJAX requests to the server at one time. Relatively speaking, the network requests are reduced and the server pressure is reduced.Top one, son军情紧急，我这便引你去见赵督军陈述利害，就按照文长所说，杨参议分兵一百伏于南京。官方宣布第六季射他。1. State patterns define the relationship between state and behavior and encapsulate them in a class. By adding new state classes, it is easy to add new states and transitions