flex implementation code for traversing the contents of Object objects

I always thought that the only way to traverse Object is obj.name. I did a data comparison today and found out

     var g2:Object = expensesAC.getItemAt(0);
       for(var i:Number=0;i<=23;i++){
        if(g2["times"+i]=="0"){
            num--;
        }else{
           d2g+=g2["times"+i];
        }
       }

This way, in fact, I feel that Object is very similar to HashMap in java, both have value pairs. .

Specific example:

private function init():void {
   //新建对象
   var obj:Object = new Object();
   //增加key-value
   obj["name"] = "liguoliang"; //格式: Object[key] = value
   obj["age"] = 25;     //注意: key必须为String, value可以为任意类型
   //使用for..in...遍历所有的key - value
   for(var k:String in obj) {
    trace("Key: " + k + " - value: " + obj[k]);
   }
   //使用for each..in遍历HashMap
   for each( var v:* in obj) {
    trace("value: " + v);
   }
   //删除一个key-value
   delete obj["age"];
   //使用for..in...遍历所有的key - value
   for(var k:String in obj) {
    trace("Key: " + k + " - value: " + obj[k]);
   }
}

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