When several effects are chained together, the first effect is begun straight away. The remaining effects are stored as functions in an array in the element's fx queue. As the effects are stored in an array, we can call standard JavaScript array methods on it to manipulate it, and examine its properties to find out additional information about it.
We can determine how many functions are in the queue by looking at the length property of the array, or we can call standard functions such as push()
, pop()
, or reverse() on it to perform various operations on the items (functions) in the array. It is unlikely that this would be required in most normal situations however.
An important point to note about the queue is that the first effect method called on an element does not get stored in the queue, so the length of the queue at the start of the operation will always be one less than the total number of effect methods called on the element.
The queue executes on a first-in...
