| 套件 | mx.validators |
| 類別 | public class NumberValidator |
| 繼承 | NumberValidator  Validator EventDispatcher Object |
| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
 | 使用 Flex 4.5 開始，Adobe 建議您使用 spark.validators.NumberValidator 類別當作是此類別的替代類別。 |
The NumberValidator class ensures that a String represents a valid number. It can ensure that the input falls within a given range (specified by
minValue and maxValue),
is an integer (specified by domain),
is non-negative (specified by allowNegative),
and does not exceed the specified precision.
The validator correctly validates formatted numbers (e.g., "12,345.67")
and you can customize the thousandsSeparator and
decimalSeparator properties for internationalization.
MXML 語法
顯示 MXML 語法
隱藏 MXML 語法The <mx:NumberValidator> tag
inherits all of the tag attributes of its superclass,
and adds the following tag attributes:
<mx:NumberValidator
allowNegative="true|false"
decimalPointCountError="The decimal separator can only occur once."
decimalSeparator="."
domain="real|int"
exceedsMaxError="The number entered is too large."
integerError="The number must be an integer."
invalidCharError="The input contains invalid characters."
invalidFormatCharsError="One of the formatting parameters is invalid."
lowerThanMinError="The amount entered is too small."
maxValue="NaN"
minValue="NaN"
negativeError="The amount may not be negative."
precision="-1"
precisionError="The amount entered has too many digits beyond the decimal point."
separationError="The thousands separator must be followed by three digits."
thousandsSeparator=","
/>
| 屬性 | 定義自 | ||
|---|---|---|---|
| allowNegative : Object
Specifies whether negative numbers are permitted. | NumberValidator | ||
 | constructor : Object
類別物件的參照或是特定物件實體的建構函數。 | Object | |
| decimalPointCountError : String
Error message when the decimal separator character occurs more than once. | NumberValidator | ||
| decimalSeparator : String
The character used to separate the whole
from the fractional part of the number. | NumberValidator | ||
| domain : String
Type of number to be validated. | NumberValidator | ||
| enabled : Boolean
Setting this value to false will stop the validator
from performing validation. | Validator | |
| exceedsMaxError : String
Error message when the value exceeds the maxValue property. | NumberValidator | ||
| integerError : String
Error message when the number must be an integer, as defined
by the domain property. | NumberValidator | ||
| invalidCharError : String
Error message when the value contains invalid characters. | NumberValidator | ||
| invalidFormatCharsError : String
Error message when the value contains invalid format characters, which means that
it contains a digit or minus sign (-) as a separator character,
or it contains two or more consecutive separator characters. | NumberValidator | ||
| listener : Object
Specifies the validation listener. | Validator | |
| lowerThanMinError : String
Error message when the value is less than minValue. | NumberValidator | ||
| maxValue : Object
Maximum value for a valid number. | NumberValidator | ||
| minValue : Object
Minimum value for a valid number. | NumberValidator | ||
| negativeError : String
Error message when the value is negative and the
allowNegative property is false. | NumberValidator | ||
| precision : Object
The maximum number of digits allowed to follow the decimal point. | NumberValidator | ||
| precisionError : String
Error message when the value has a precision that exceeds the value defined
by the precision property. | NumberValidator | ||
| property : String
A String specifying the name of the property
of the source object that contains
the value to validate. | Validator | |
| required : Boolean = true
If true, specifies that a missing or empty
value causes a validation error. | Validator | |
| requiredFieldError : String
Error message when a value is missing and the
required property is true. | Validator | |
| separationError : String
Error message when the thousands separator is in the wrong location. | NumberValidator | ||
| source : Object
Specifies the object containing the property to validate. | Validator | |
| thousandsSeparator : String
The character used to separate thousands
in the whole part of the number. | NumberValidator | ||
| trigger : IEventDispatcher
Specifies the component generating the event that triggers the validator. | Validator | |
| triggerEvent : String
Specifies the event that triggers the validation. | Validator | |
| 方法 | 定義自 | ||
|---|---|---|---|
Constructor. | NumberValidator | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
會在 EventDispatcher 物件註冊事件偵聽程式，以便讓偵聽程式收到事件的通知。 | EventDispatcher | |
|
會將事件傳送到事件流程。 | EventDispatcher | |
|
會檢查 EventDispatcher 物件是否有對特定的事件類型註冊偵聽程式。 | EventDispatcher | |
|
指出物件是否有已定義的指定屬性。 | Object | |
|
Called automatically by the MXML compiler when the Validator
is created using an MXML tag. | Validator | |
|
指出 Object 類別的實體是否位於指定為參數的物件原型鏈中。 | Object | |
|
指出指定的屬性是否存在，以及是否可列舉。 | Object | |
|
會從 EventDispatcher 物件移除偵聽程式。 | EventDispatcher | |
|
為迴圈作業設定動態屬性的可用性。 | Object | |
|
傳回代表此物件的字串，根據地區特定慣例進行格式化。 | Object | |
|
會傳回指定之物件的字串形式。 | Object | |
|
Performs validation and optionally notifies
the listeners of the result. | Validator | |
| [靜態]
Invokes all the validators in the validators Array. | Validator | |
[靜態]
Convenience method for calling a validator
from within a custom validation function. | NumberValidator | ||
|
會傳回指定之物件的基本值。 | Object | |
|
檢查此 EventDispatcher 物件是否已註冊事件偵聽程式，或者此物件的任何祖系已為特定事件類型註冊事件偵聽程式。 | EventDispatcher | |
| 方法 | 定義自 | ||
|---|---|---|---|
|
Sets up all of the listeners for the
valid and invalid
events dispatched from the validator. | Validator | |
[覆寫]
Override of the base class doValidation() method
to validate a number. | NumberValidator | ||
|
Returns the Object to validate. | Validator | |
|
Returns a ValidationResultEvent from the Array of error results. | Validator | |
|
Returns true if value is not null. | Validator | |
|
Disconnects all of the listeners for the
valid and invalid
events dispatched from the validator. | Validator | |
|
This method is called when a Validator is constructed,
and again whenever the ResourceManager dispatches
a "change" Event to indicate
that the localized resources have changed in some way. | Validator | |
allowNegative | 屬性 |
decimalPointCountError | 屬性 |
decimalPointCountError:String| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Error message when the decimal separator character occurs more than once.
預設值為 "The decimal separator can occur only once."。
實作
public function get decimalPointCountError():String public function set decimalPointCountError(value:String):voiddecimalSeparator | 屬性 |
decimalSeparator:String| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
The character used to separate the whole
from the fractional part of the number.
Cannot be a digit and must be distinct from the
thousandsSeparator.
預設值為 "."。
實作
public function get decimalSeparator():String public function set decimalSeparator(value:String):voiddomain | 屬性 |
domain:String| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Type of number to be validated.
Permitted values are "real" and "int".
In ActionScript, you can use the following constants to set this property:
NumberValidatorDomainType.REAL or
NumberValidatorDomainType.INT.
預設值為 "real"。
實作
public function get domain():String public function set domain(value:String):voidexceedsMaxError | 屬性 |
integerError | 屬性 |
integerError:String| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Error message when the number must be an integer, as defined
by the domain property.
預設值為 "The number must be an integer."。
實作
public function get integerError():String public function set integerError(value:String):voidinvalidCharError | 屬性 |
invalidFormatCharsError | 屬性 |
invalidFormatCharsError:String| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Error message when the value contains invalid format characters, which means that it contains a digit or minus sign (-) as a separator character, or it contains two or more consecutive separator characters.
預設值為 "One of the formatting parameters is invalid."。
實作
public function get invalidFormatCharsError():String public function set invalidFormatCharsError(value:String):voidlowerThanMinError | 屬性 |
maxValue | 屬性 |
minValue | 屬性 |
negativeError | 屬性 |
negativeError:String| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Error message when the value is negative and the
allowNegative property is false.
預設值為 "The amount may not be negative."。
實作
public function get negativeError():String public function set negativeError(value:String):voidprecision | 屬性 |
precision:Object| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
The maximum number of digits allowed to follow the decimal point.
Can be any nonnegative integer.
Note: Setting to 0 has the same effect
as setting domain to "int".
A value of -1 means it is ignored.
預設值為 -1。
實作
public function get precision():Object public function set precision(value:Object):voidprecisionError | 屬性 |
precisionError:String| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Error message when the value has a precision that exceeds the value defined by the precision property.
預設值為 "The amount entered has too many digits beyond the decimal point."。
實作
public function get precisionError():String public function set precisionError(value:String):voidseparationError | 屬性 |
separationError:String| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Error message when the thousands separator is in the wrong location.
預設值為 "The thousands separator must be followed by three digits."。
實作
public function get separationError():String public function set separationError(value:String):voidthousandsSeparator | 屬性 |
thousandsSeparator:String| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
The character used to separate thousands
in the whole part of the number.
Cannot be a digit and must be distinct from the
decimalSeparator.
預設值為 ","。
實作
public function get thousandsSeparator():String public function set thousandsSeparator(value:String):voidNumberValidator | () | 建構函式 |
public function NumberValidator()| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Constructor.
doValidation | () | 方法 |
override protected function doValidation(value:Object):Array| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Override of the base class doValidation() method
to validate a number.
You do not call this method directly; Flex calls it as part of performing a validation. If you create a custom Validator class, you must implement this method.
參數
value:Object — Object to validate.
|
Array — An Array of ValidationResult objects, with one ValidationResult
object for each field examined by the validator.
|
validateNumber | () | 方法 |
public static function validateNumber(validator:NumberValidator, value:Object, baseField:String):Array| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Convenience method for calling a validator from within a custom validation function. Each of the standard Flex validators has a similar convenience method.
參數
validator:NumberValidator — The NumberValidator instance.
| |
value:Object — A field to validate.
| |
baseField:String — Text representation of the subfield
specified in the value parameter.
For example, if the value parameter specifies value.number,
the baseField value is "number".
|
Array — An Array of ValidationResult objects, with one ValidationResult
object for each field examined by the validator.
|
相關 API 元素
<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the NumberValidator. -->
<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>
import mx.controls.Alert;
</fx:Script>
<fx:Declarations>
<mx:NumberValidator source="{age}" property="text" integerError="Enter Integer value"
minValue="18" maxValue="50" domain="int"
trigger="{myButton}" triggerEvent="click"
valid="Alert.show('Validation Succeeded!');"
invalid="Alert.show('Validation failed!');"/>
</fx:Declarations>
<s:Panel title="NumberValidator Example"
width="75%" height="75%"
horizontalCenter="0" verticalCenter="0">
<mx:Form left="10" right="10" top="10" bottom="10">
<mx:FormItem label="Enter an age between 18 and 50:">
<s:TextInput id="age" width="100%"/>
</mx:FormItem>
<mx:FormItem >
<s:Button id="myButton" label="Validate" />
</mx:FormItem>
</mx:Form>
</s:Panel>
</s:Application>
Tue Jun 12 2018, 03:47 PM Z