CurrencyFormatter 貨幣地區設定格式化

package {
  import com.actionscriptbible.Example;
  import flash.globalization.*;
  public class ch41ex4 extends Example {
    public function ch41ex4() {
      var local:CurrencyFormatter = new CurrencyFormatter(LocaleID.DEFAULT);
      trace(local.format(123456.78)); //USD123,456.78
      var usa:CurrencyFormatter = new CurrencyFormatter("en-US");
      trace(usa.format(123456.78, true)); //$123,456.78
      var jp:CurrencyFormatter = new CurrencyFormatter("ja-JP");
      trace(jp.format(123456.78, true)); //¥123,457
      var de:CurrencyFormatter = new CurrencyFormatter("de-DE");
      trace (de.format(123456.78, true)); //123.456,78 €
      var fr:CurrencyFormatter = new CurrencyFormatter("fr-FR");
      trace (fr.format(123456.78, true)); //123 456,78 €
      
      var localeID:LocaleID = new LocaleID(local.actualLocaleIDName);
      trace("Local currency in " + localeID.getRegion() + ": " +
        local.currencyISOCode + " (" + local.currencySymbol + ")");
    }
  }
}

NumberFormatter 地區貨幣格式化

  /**
   * 四捨五入格式化數字小數精度，預設整數，使用千分位
   * @param number Number 要格式化的數字
   * @param decimalCount int 小數的個數，預設0
   * @param useThousandsSeparator Boolean 是否使用千分位， 預設true
   * @return 格式化後的字串
   */
  public static function formatNumberDecimal(number:Number, decimalCount:int = 2, useThousandsSeparator:Boolean = true):String {
   var numberFormatter:NumberFormatter = new NumberFormatter("en-US");
   //小數分隔符號  
   numberFormatter.decimalSeparator = ".";
   //小數點後的位數
   numberFormatter.fractionalDigits = decimalCount;
   //是否自動在小數後補位
   numberFormatter.trailingZeros = false;
   //當小數左側沒有整數時，加上前導0，例如：0.1  
   numberFormatter.leadingZero = true;
   
   //3;* 123,456,789.12  
   //3;2;* 12,34,56,789.12  
   //3 123456,789.12  
   //分組表達式，採用3位一組的千分法  
   numberFormatter.groupingPattern = "3;*";
   //千分位的分組  
   numberFormatter.useGrouping = useThousandsSeparator;
   //千分位的分隔符  
   numberFormatter.groupingSeparator = ",";
   //返回格式化後的字串  
   return numberFormatter.formatNumber(number);
  }