Angularjs监视数组并获取更改的对象

In the context of inserting or deleting from an array in angular, is it possible to watch the array and then get the object that was added or deleted from the array? I don't care about the objects properties in the array, only the objects themselves being added or deleted. So I believe $watchCollection is a good fit here so it's not a deep watch.In the context of inserting or deleting from an