Flex DateFormatter以及Date属性

时间：2011-06-16 来源：边缘元素

我们常用下面的三个 public static function GetDate(s:String):Date
  {

   if (s.length > 0)
   {
    var sArr:Array = s.split("-");
    if (sArr.length >= 3)
     return new Date(sArr[0], int(sArr[1])-1, sArr[2]);
   }
   return new Date(1970, 1, 1);
  }
  public static function GetDateStr(dt:Date):String
  {
   var fmt:DateFormatter = new DateFormatter();
   fmt.formatString = "YYYY-MM-DD";
   return fmt.format(dt);
  } public static function format(date:Date,formatString:String):String
  {
   if(date == null){
    return null;
   }
   var df:DateFormatter = new DateFormatter();
   df.formatString = formatString;
   return df.format(date);
  } 因为Date有构造方法 public function Date(yearOrTimevalue:Object, month:Number, date:Number = 1, hour:Number = 0, minute:Number = 0, second:Number = 0,
millisecond:Number = 0) 因此我们也可以自己写 public static function GetDateTime(s:String):Date                //2011-06-11 12:35:13
  {
   if (s.length > 0)
   {
    var ss:Array = s.split(" ");
    var sArr:Array = ss[0].split("-");
    var sArr1:Array = ss[1].split(":");
    return new Date(sArr[0], int(sArr[1])-1, sArr[2], sArr1[0], sArr1[1], sArr1[2]);
   }

   return new Date(1970, 1, 1);
  }

  public static function GetDateTime2(s:String):Date             //2011-06-11
  {
   if(s == null || s == "")
    return new Date(2010,0,1);

   else if (s.length > 0)
   {
    var ss:Array = s.split(" ");
    var sArr:Array = ss[0].split("-");
    return new Date(sArr[0], int(sArr[1])-1, sArr[2]);
   }

   return new Date(2010,0,1);
  } public static function GetMinutes(s:String):int
  {
   var dt:Date = GetDateTime(s);
   var dtNow:Date = new Date();
   var diff:Number = (dtNow.getTime() - dt.getTime()) /1000;
   return diff/60;
  }

  public static function GetWaitingDate(s:String):String
  {    var dt:Date = GetDateTime(s);
   var dtNow:Date = new Date();
   var diff:Number = (dtNow.getTime() - dt.getTime()) /1000;    //Alert.show(GetDateStr2(dt));

   var sRet:String = "";
   var iHour:int = 0;
   var iMinute:int = 0;
   var iSec:int = 0;
   if (diff > 3600*24)
   {
    var iDay:int = diff / (3600*24);
    //sRet = iDay + "天";
    diff = diff % (3600*24);
   }
   iHour = diff/3600;
   if (iHour > 0)
    diff = diff % 3600;
   iMinute = diff/60;
   if (iMinute > 0)
    diff = diff % 60;
   iSec = diff;
   var sHour:String = iHour.toString();
   if (sHour.length == 1)
    sHour = "0" + sHour;
   var sMin:String = iMinute.toString();
   if (sMin.length == 1)
    sMin = "0" + sMin;
   var sSec:String = iSec.toString();
   if (sSec.length == 1)
    sSec = "0" + sSec;

   sRet = sRet + sHour + ":" + sMin + ":" + sSec;
   return sRet;
  } Date 容易混淆的属性date和day date : Number 按照本地时间返回 Date 对象所指定的表示月中某天的值（1 到 31 之间的一个整数）。

getDate():Number按照本地时间返回 Date 对象指定的月中某天的值（1 到 31 之间的一个整数）。

day : Number
[只读 (read-only)] 按照本地时间返回该 Date 所指定的星期值（0 代表星期日，1 代表星期一，依此类推）。

getDay():Number按照本地时间返回该 Date 所指定的星期值（0 代表星期日，1 代表星期一，依此类推）。