Array.splice返回值是數組

import flash.display.MovieClip;

import flash.display.DisplayObject;

var m:MovieClip = new MovieClip();

var a:Array = [m];

var o:DisplayObject = a.splice(0, 1) as DisplayObject;

trace(o) //這樣爲何會輸出null呢

原來Array.splice返回值是數組。。

var o:DisplayObject = a.splice(0, 1)[0] as DisplayObject;

trace(o) 這樣就沒問題了