多个连续ajax请求的jquery模式

I have a for each loop with an array, for each element in the array I need to retrieve data from the server so I will make an ajax request per element and store the result in another array, I need to know when the last element in the array has been processed so I can display the data, is there a pattern or how could I do this without over complicating things which I think is what I'm doingI have a for each loop with an array, for each