钩子回调
【Hook callbacks】
异步事件生命周期中的关键事件已被归类为四个方面：实例化、回调调用前/后以及实例被销毁时。
【Key events in the lifetime of asynchronous events have been categorized into four areas: instantiation, before/after the callback is called, and when the instance is destroyed.】
【Hook callbacks】
异步事件生命周期中的关键事件已被归类为四个方面：实例化、回调调用前/后以及实例被销毁时。
【Key events in the lifetime of asynchronous events have been categorized into four areas: instantiation, before/after the callback is called, and when the instance is destroyed.】