flex中为控件添加监听器并计算

1、添加监听器：

public function moduleCreationComplete():void
            {
                this.D601_29a.addEventListener(FlexEvent.SELECTION_CHANGE,setD601_28);
                this.D601_30a.addEventListener(FlexEvent.SELECTION_CHANGE,setD601_28);
                this.D601_31a.addEventListener(FlexEvent.SELECTION_CHANGE,setD601_28);
                this.D601_29b.addEventListener(FlexEvent.SELECTION_CHANGE,setD601_28);
                this.D601_30b.addEventListener(FlexEvent.SELECTION_CHANGE,setD601_28);
                this.D601_31b.addEventListener(FlexEvent.SELECTION_CHANGE,setD601_28);

                this.D601_36.addEventListener(FlexEvent.SELECTION_CHANGE,setD601_35);
                this.D601_37.addEventListener(FlexEvent.SELECTION_CHANGE,setD601_35);
                this.D601_65.addEventListener(FlexEvent.CHANGING,setD601_07);
                this.D601_65.addEventListener(FlexEvent.ENTER,setD601_07);
            }

2、写计算函数：

public function setD601_28(event:Event):void
            {//计算小时分钟
                var firsta:Number = Number(this.D601_29a.text);
                var firstb:Number = Number(this.D601_29b.text);
                var seconda:Number = Number(this.D601_30a.text);
                var secondb:Number = Number(this.D601_30b.text);
                var thirda:Number = Number(this.D601_31a.text);
                var thirdb:Number = Number(this.D601_31b.text);

                this.D601_28a.text = (Math.floor(((firsta + seconda + thirda)*60 +firstb + secondb + thirdb) / 60)).toString();
                this.D601_28b.text = (((firsta + seconda + thirda)*60 +firstb + secondb + thirdb) % 60).toString();
            }
            public function setD601_35(event:Event):void
            {
                var chanshi:Number = Number(this.D601_36.text);
                var chanhou:Number = Number(this.D601_37.text);

                this.D601_35.text = (chanshi + chanhou).toString();
            }
            public function setD601_07(event:Event):void
            {//根据身份证号计算年龄
                var cardId:String = this.D601_65.text;
                if(cardId.length >= 16)
                {
                    var year:Number = Number(this.D601_65.text.substr(6,4));
                    var month:Number = Number(this.D601_65.text.substr(10,2));
                    var day:Number = Number(this.D601_65.text.substr(12,2));
                    var date:Date = new Date();
                    var nowMonth = date.month + 1;
                    var age = date.fullYear - year;
                    if(month > nowMonth || month == nowMonth && day >= date.date)
                    {
                        age++;
                    }
                    this.D601_07.text=age;
                }
            }