Trace Children

//returns a DisplayObject
trace(getChildAt(0));
 
//states how many children it has
trace(numChildren);
 
//If you use this before and after the removeChild you should have a difference of 1. But if //you wanted to trace each child individually you would have to trace in a for loop:
for (var i:int = 0; i < numChildren; i++) { trace(getChildAt(i)); }