数组自定义排序，判断对象是否为空！

package {import flash.display.Sprite;public class MMT extends Sprite{public function MMT(){var arr:Array = new Array();arr.push({username:"V","userrank":1,usermoney:100});arr.push({username:"V","userrank":4,usermoney:100});arr.push({username:"V","userrank":2,usermoney:100});traceArray(arr);trace("----------");arr.sortOn("userrank",Array.DESCENDING);traceArray(arr);var flag = true;if(flag){trace(flag);}flag = false;if(flag){trace(flag);}var obj:Object = new Object();if(obj){trace("obj : " + obj);}var obj2:Object;if(obj2){trace("obj2 : " + obj2);}}private function traceArray(arr:Array):void{for(var i:uint = 0;i < arr.length;i++){trace(arr[i].userrank);}}}}

 

1
4
2
----------
4
2
1
true
obj : [object Object]
[SWF] G:/work2/MMT/bin-debug/MMT.swf - 1,630 bytes after decompression