Datefield Ranges Flex

Question

我有两个Datefield .Is，我可以将第二个Datefield的日期设置为指定的范围(比如三天...？)。我试着做这件事，但没有成功。不知道如何将日期转换回字符串并格式化。以下是代码

<mx:DateField disabledRanges="{[{rangeEnd: new Date(2011,05,31)}]}" id="dfield1" change="leaveDate()" parseFunction="null" width="100"  x="156" y="130"/>
<mx:DateField disabledRanges="{[{rangeEnd: new Date(2011,05,31)}]}" id="dfield2"  parseFunction="null" width="100"  x="426" y="130"/>

private function leaveDate():void {
    //var dateLeave:Date = dfield1.selectedDate;
    var myTime:Date =dfield1.selectedDate;
    dateAdd("date", 3, myTime);
    //car formatter1:Datef
    commentField.text+=myTime+"\n"
    //dfield2.selectedDate = returnDate
}
public static function dateAdd(datepart:String = "", number:Number = 0, date:Date = null):Date
        {
    if (date == null) {
        date = new Date();
    }

    var returnDate:Date = new Date(date.time);;

    switch (datepart.toLowerCase()) {
        case "fullyear":
        case "month":
        case "date":
        case "hours":
        case "minutes":
        case "seconds":
        case "milliseconds":
            returnDate[datepart] += number;
            break;
        default:
            /* Unknown date part, do nothing. */
            break;
    }
      return returnDate;
}

如果有人能帮上忙，我将不胜感激

Answer 1

要对日期进行计算，必须首先将它们转换为数字，即以纪元时间表示的日期或从1970年1月1日起经过的秒数。然后，你可以在你的date上执行任何操作。例如：

// Today
var today:Date = new Date();

// Tomorrow
var tomorrow:Date = new Date();

// How many seconds in a day ?
var secsInOneDay:Number = 60*60*24;

// Changes the tomorrow date to actually be tomorrow ^^
tomorrow.setTime(today.getTime() + secsInOneDay);

Answer 2

如果您想禁用在dfield1中选择的日期之前的日期，以及在dfield1中选择的日期之后三天之后的日期，请尝试执行以下操作：

<mx:DateField disabledRanges="{[{rangeEnd: new Date(2011,05,31)}]}" id="dfield1" change="leaveDate()" parseFunction="null" width="100"  x="156" y="130"/>
<mx:DateField disabledRanges="{[{rangeEnd: new Date(2011,05,31)}]}" id="dfield2"  parseFunction="null" width="100"  x="426" y="130"/>

private function leaveDate():void {
   dfield2.disabledRanges = [ { rangeEnd:new Date(
   dfield1.selectedDate.fullYear,
   dfield1.selectedDate.month,
   dfield1.selectedDate.date - 1 ) },
   { rangeStart:new Date(
   dfield1.selectedDate.fullYear,
   dfield1.selectedDate.month,
   dfield1.selectedDate.date + 3 ) } ];
}