Friends who are familiar with ActionScript may have a understanding, which is in Flash, which is much faster than for cycle, so I don't have to cycle with for ... IN cycles I have always thought that I may think in Object. No problem (nor did it test), but for Array, there is only one sequence, and there is no other element. Is it faster with for ... IN cycle? I have been doubting this conclusion, I finally did it today. Test: var TMPARRAY = New Array (); var Time1 = getTimer (); for (var i = 0; i <10000; i ) {tmpArray [i] = "abcd";} var Time2 = getTimer (); Trace (TIME2-TIME1); VAR TMP; for (var i = 0; i