flex for循环

            //for ..in     循环中的迭代变量包含属性所保存的值和名称
            //for each..in 循环中的迭代变量只包含属性所保存的值，而不包含属性的名称
            
            //对象遍历，可以获取属性名称
            private function testObject():void
            {
                var myObj:Object = {x:20, y:30};
                //i:属性名称
                for (var i:String in myObj)
                {
                    lab1.text+=i + ": " + myObj[i]+",";
                }
                
                var myObj:Object = {x:20, y:30};
                for each (var num in myObj)
                {
                    lab11.text+=num+",";
                }
            }
            
            //数组遍历，获取不到属性名称
            private function testArray():void
            {
                //myArray[i]是对象，只能这样访问：myArray[i].x
                var myArray:Array = [{x:20},{x:30}];
                //i：数组的序号
                for (var i:String in myArray)
                {
                    lab2.text+=i + ": " + myArray[i].x+",";
                }
                
                //item     是对象，只能这样访问：item.x
                var myArray:Array = [{x:20},{x:30}];
                for each (var item in myArray)
                {
                    lab22.text+=item.x+",";
                }
            }

转载于:https://www.cnblogs.com/tiandi/p/4107587.html