| Pakket | mx.formatters |
| Klasse | public class DateFormatter |
| Overerving | DateFormatter  Formatter Object |
| Subklassen | ExpiryDateFormat |
| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
 | spark.formatters.DateTimeFormatter |
The DateFormatter class uses a format String to return a formatted date and time String from an input String or a Date object. You can create many variations easily, including international formats.
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 a value that is not a Date object or a is not a recognized String representation of a date is passed to theformat()method. (An empty argument is allowed.) -
"Invalid format"means either theformatStringproperty is set to empty (""), or there is less than one pattern letter in theformatStringproperty.
The parseDateString() method uses the mx.formatters.DateBase class
to define the localized string information required to convert
a date that is formatted as a String into a Date object.
MXML-syntaxis weergeven
MXML-syntaxis verbergenYou use the <mx:DateFormatter> tag
to render date and time Strings from a Date object.
The <mx:DateFormatter> tag
inherits all of the tag attributes of its superclass,
and adds the following tag attributes:
<mx:DateFormatter
formatString="Y|M|D|A|E|H|J|K|L|N|S|Q"
/>
Verwante API-elementen
| Eigenschap | Gedefinieerd door | ||
|---|---|---|---|
 | constructor : Object
Verwijzing naar het klasseobject of de constructorfunctie van een bepaalde objectinstantie. | Object | |
| error : String
Description saved by the formatter when an error occurs. | Formatter | |
| formatString : String
The mask pattern. | DateFormatter | ||
| Methode | Gedefinieerd door | ||
|---|---|---|---|
Constructor. | DateFormatter | ||
[overschrijven]
Generates a date-formatted String from either a date-formatted String or a Date object. | DateFormatter | ||
|
Geeft aan of voor een object een opgegeven eigenschap is gedefinieerd. | Object | |
|
Geeft aan of een instantie van de klasse Object zich in de prototypeketen van het object bevindt dat als parameter is opgegeven. | Object | |
[statisch]
Converts a date that is formatted as a String into a Date object. | DateFormatter | ||
|
Geeft aan of de opgegeven eigenschap bestaat en kan worden opgesomd. | Object | |
|
Stelt de beschikbaarheid van een dynamische eigenschap voor lusbewerkingen in. | Object | |
|
Geeft de tekenreeksweergave van dit object weer, geformatteerd volgens de locatiespecifieke conventies. | Object | |
|
Retourneert een tekenreeksrepresentatie van het opgegeven object. | Object | |
|
Retourneert de primitieve waarde van het opgegeven object. | Object | |
formatString | eigenschap |
formatString:String| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
The mask pattern.
You compose a pattern String using specific uppercase letters, for example: YYYY/MM.
The DateFormatter pattern String can contain other text in addition to pattern letters. To form a valid pattern String, you only need one pattern letter.
The following table describes the valid pattern letters:
| Pattern letter | Description |
|---|---|
| Y | Year. If the number of pattern letters is two, the year is
truncated to two digits; otherwise, it appears as four digits.
The year can be zero-padded, as the third example shows in the
following set of examples:
|
| M | Month in year. The format depends on the following criteria:
|
| D | Day in month. While a single-letter pattern string for day is valid,
you typically use a two-letter pattern string.
Examples:
|
| E | Day in week. The format depends on the following criteria:
|
| A | am/pm indicator. |
| J | Hour in day (0-23). |
| H | Hour in day (1-24). |
| K | Hour in am/pm (0-11). |
| L | Hour in am/pm (1-12). |
| N | Minute in hour.
Examples:
|
| S | Second in minute.
Example:
|
| Q | Millisecond in second
Example:
|
| Other text | You can add other text into the pattern string to further
format the string. You can use punctuation, numbers,
and all lowercase letters. You should avoid uppercase letters
because they may be interpreted as pattern letters.
Example:
|
De standaardwaarde is "MM/DD/YYYY".
Implementatie
public function get formatString():String public function set formatString(value:String):voidDateFormatter | () | Constructor |
public function DateFormatter()| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Constructor.
format | () | methode |
override public function format(value:Object):String| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Generates a date-formatted String from either a date-formatted String or a Date object.
The formatString property
determines the format of the output String.
If value cannot be formatted, return an empty String
and write a description of the error to the error property.
Parameters
value:Object — Date to format. This can be a Date object,
or a date-formatted String such as "Thursday, April 22, 2004".
|
String — Formatted String. Empty if an error occurs. A description
of the error condition is written to the error property.
|
parseDateString | () | methode |
public static function parseDateString(str:String):Date| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Converts a date that is formatted as a String into a Date object. Month and day names must match the names in mx.formatters.DateBase. The hour value in the String must be between 0 and 23, inclusive. The minutes and seconds value must be between 0 and 59, inclusive. The following example uses this method to create a Date object:
var myDate:Date = DateFormatter.parseDateString("2009-12-02 23:45:30");
Parameters
str:String — Date that is formatted as a String.
|
Date — Date object.
|
Verwante API-elementen
<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the DateFormatter. -->
<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 = dateVal.validate();
if (vResult.type == ValidationResultEvent.VALID) {
formattedDate.text = dateFormatter.format(dob.text);
} else {
formattedDate.text = "";
}
}
]]>
</fx:Script>
<fx:Declarations>
<mx:DateFormatter id="dateFormatter" formatString="month: MM, day: DD, year: YYYY"/>
<mx:DateValidator id="dateVal" source="{dob}" property="text" inputFormat="mm/dd/yyyy"/>
</fx:Declarations>
<s:Panel title="DateFormatter Example" width="75%" height="75%" horizontalCenter="0" verticalCenter="0">
<mx:Form left="10" right="10" top="10" bottom="10">
<mx:FormItem label="Enter date (mm/dd/yyyy):" width="100%">
<s:TextInput id="dob" text=""/>
</mx:FormItem>
<mx:FormItem label="Formatted date: " width="100%">
<s:TextInput id="formattedDate" text="" editable="false"/>
</mx:FormItem>
<mx:FormItem>
<s:Button label="Validate and Format" click="Format();"/>
</mx:FormItem>
</mx:Form>
</s:Panel>
</s:Application>
Wed Jun 13 2018, 11:42 AM Z