计算今天是今年的第几周

算法：

/** * 计算今天是今年的第几周 * @author wangfeng *  */ private function weekOfYear(yyyy:Number,mm:Number,dd:Number):Number{var myDate:Date = new Date(yyyy,mm-1,dd);var startDate:Date = new Date(yyyy,0,1);var diff:Number = myDate.valueOf()-startDate.valueOf();var d:Number = Math.round(diff/86400000);return Math.ceil((d + ((startDate.getDay() + 1) - 1)) / 7);}

 调用：

protected function weekCbb_initializeHandler(event:FlexEvent):void{weekCbb.textInput.editable = false;weekCbb.selectedIndex = (weekOfYear(new Date().getFullYear(),new Date().getMonth()+1,new Date().getDate()))-1;Alert.show("a");}