var dic:Dictionary = new Dictionary(); dic["1"] = 10; dic["2"] = 20; //for..in 循环用来基于键进行循环访问 for (var key in dic) { //输出: //1 //2 trace(key); } //for each..in 循环用来基于与每个键关联的值进行循环访问 for each(var value in dic) { //输出: //10 //20 trace(value); }