| Paket | mx.formatters |
| Klass | public class NumberFormatter |
| Arv | NumberFormatter  Formatter Object |
| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
 | Med början från Flex 4.5, rekommenderar Adobe att du använder klassen spark.formatters.NumberFormatter som ett alternativ till den här klassen. |
The NumberFormatter class formats a valid number by adjusting the decimal rounding and precision, the thousands separator, and the negative sign.
If you use both the rounding and precision
properties, rounding is applied first, and then you set the decimal length
by using the specified precision value.
This lets you round a number and still have a trailing decimal;
for example, 303.99 = 304.00.
If an error occurs, an empty String is returned and a String
describing the error is saved to the error property.
The error property can have one of the following values:
-
"Invalid value"means an invalid numeric value is passed to theformat()method. The value should be a valid number in the form of a Number or a String. -
"Invalid format"means one of the parameters contain an unusable setting.
Visa MXML-syntax
Dölj MXML-syntaxThe <mx:NumberFormatter> tag
inherits all of the tag attributes of its superclass,
and adds the following tag attributes:
<mx:NumberFormatter
decimalSeparatorFrom="."
decimalSeparatorTo="."
precision="-1"
rounding="none|up|down|nearest"
thousandsSeparatorFrom=","
thousandsSeparatorTo=","
useNegativeSign="true|false"
useThousandsSeparator="true|false"/>
Relaterade API-element
| Egenskap | Definieras med | ||
|---|---|---|---|
 | constructor : Object
En referens till klassobjektet eller konstruktorfunktionen för en given objektinstans. | Object | |
| decimalSeparatorFrom : String
Decimal separator character to use
when parsing an input String. | NumberFormatter | ||
| decimalSeparatorTo : String
Decimal separator character to use
when outputting formatted decimal numbers. | NumberFormatter | ||
| error : String
Description saved by the formatter when an error occurs. | Formatter | |
| precision : Object
Number of decimal places to include in the output String. | NumberFormatter | ||
| rounding : String
Specifies how to round the number. | NumberFormatter | ||
| thousandsSeparatorFrom : String
Character to use as the thousands separator
in the input String. | NumberFormatter | ||
| thousandsSeparatorTo : String
Character to use as the thousands separator
in the output String. | NumberFormatter | ||
| useNegativeSign : Object
If true, format a negative number
by preceding it with a minus "-" sign. | NumberFormatter | ||
| useThousandsSeparator : Object
If true, split the number into thousands increments
by using a separator character. | NumberFormatter | ||
| Metod | Definieras med | ||
|---|---|---|---|
Constructor. | NumberFormatter | ||
[åsidosätt]
Formats the number as a String. | NumberFormatter | ||
|
Anger om det finns en egenskap angiven för ett objekt. | Object | |
|
Anger om en instans av klassen Object finns i prototypkedjan för objektet som anges som parameter. | Object | |
|
Anger om den angivna egenskapen finns och är uppräkningsbar. | Object | |
|
Anger tillgänglighet för en dynamisk egenskap för slingåtgärder. | Object | |
|
Returnerar det här objektets strängrepresentation, formaterad i enlighet med språkspecifika konventioner. | Object | |
|
Returnerar det angivna objektets strängbeteckning. | Object | |
|
Returnerar det angivna objektets primitiva värde. | Object | |
decimalSeparatorFrom | egenskap |
decimalSeparatorFrom:String| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Decimal separator character to use when parsing an input String.
When setting this property, ensure that the value of the
thousandsSeparatorFrom property does not equal this property.
Otherwise, an error occurs when formatting the value.
Standardvärdet är ".".
Implementering
public function get decimalSeparatorFrom():String public function set decimalSeparatorFrom(value:String):voidRelaterade API-element
decimalSeparatorTo | egenskap |
decimalSeparatorTo:String| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Decimal separator character to use when outputting formatted decimal numbers.
When setting this property, ensure that the value of the
thousandsSeparatorTo property does not equal this property.
Otherwise, an error occurs when formatting the value.
Standardvärdet är ".".
Implementering
public function get decimalSeparatorTo():String public function set decimalSeparatorTo(value:String):voidRelaterade API-element
precision | egenskap |
precision:Object| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Number of decimal places to include in the output String.
You can disable precision by setting it to -1.
A value of -1 means do not change the precision. For example,
if the input value is 1.453 and rounding
is set to NumberBaseRoundType.NONE, return a value of 1.453.
If precision is -1 and you have set some form of
rounding, return a value based on that rounding type.
Standardvärdet är -1.
Implementering
public function get precision():Object public function set precision(value:Object):voidrounding | egenskap |
rounding:String| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Specifies how to round the number.
In ActionScript, you can use the following constants to set this property:
NumberBaseRoundType.NONE, NumberBaseRoundType.UP,
NumberBaseRoundType.DOWN, or NumberBaseRoundType.NEAREST.
Valid MXML values are "down", "nearest", "up", and "none".
Standardvärdet är NumberBaseRoundType.NONE.
Implementering
public function get rounding():String public function set rounding(value:String):voidRelaterade API-element
thousandsSeparatorFrom | egenskap |
thousandsSeparatorFrom:String| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Character to use as the thousands separator in the input String.
When setting this property, ensure that the value of the
decimalSeparatorFrom property does not equal this property.
Otherwise, an error occurs when formatting the value.
Standardvärdet är ",".
Implementering
public function get thousandsSeparatorFrom():String public function set thousandsSeparatorFrom(value:String):voidRelaterade API-element
thousandsSeparatorTo | egenskap |
thousandsSeparatorTo:String| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Character to use as the thousands separator in the output String.
When setting this property, ensure that the value of the
decimalSeparatorTo property does not equal this property.
Otherwise, an error occurs when formatting the value.
Standardvärdet är ",".
Implementering
public function get thousandsSeparatorTo():String public function set thousandsSeparatorTo(value:String):voidRelaterade API-element
useNegativeSign | egenskap |
useNegativeSign:Object| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
If true, format a negative number
by preceding it with a minus "-" sign.
If false, format the number
surrounded by parentheses, for example (400).
Standardvärdet är true.
Implementering
public function get useNegativeSign():Object public function set useNegativeSign(value:Object):voiduseThousandsSeparator | egenskap |
useThousandsSeparator:Object| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
If true, split the number into thousands increments
by using a separator character.
Standardvärdet är true.
Implementering
public function get useThousandsSeparator():Object public function set useThousandsSeparator(value:Object):voidNumberFormatter | () | Konstruktor |
public function NumberFormatter()| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Constructor.
format | () | metod |
override public function format(value:Object):String| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Formats the number as a String.
If value cannot be formatted, return an empty String
and write a description of the error to the error property.
Parametrar
value:Object — Value to format.
|
String — Formatted String. Empty if an error occurs.
|
<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate NumberFormatter. -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<fx:Script>
<![CDATA[
import mx.events.ValidationResultEvent;
private var vResult:ValidationResultEvent;
// Event handler to validate and format input.
private function Format():void {
vResult = numVal.validate();
if (vResult.type == ValidationResultEvent.VALID) {
formattedNumber.text = numberFormatter.format(inputVal.text);
} else {
formattedNumber.text = "";
}
}
]]>
</fx:Script>
<fx:Declarations>
<mx:NumberFormatter id="numberFormatter" precision="4"
useThousandsSeparator="true" useNegativeSign="true"/>
<mx:NumberValidator id="numVal" source="{inputVal}" property="text"
allowNegative="true" domain="real"/>
</fx:Declarations>
<s:Panel title="NumberFormatter Example"
width="75%" height="75%"
horizontalCenter="0" verticalCenter="0">
<mx:Form left="10" right="10" top="10" bottom="10">
<mx:FormItem label="Enter number:">
<s:TextInput id="inputVal" text="" width="50%"/>
</mx:FormItem>
<mx:FormItem label="Formatted number (precision=4): ">
<s:TextInput id="formattedNumber" editable="false" width="50%"/>
</mx:FormItem>
<mx:FormItem>
<s:Button label="Validate and Format" click="Format();"/>
</mx:FormItem>
</mx:Form>
</s:Panel>
</s:Application>
Tue Jun 12 2018, 01:40 PM Z