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NumberValueAccessor

directive

The ControlValueAccessor for writing a number value and listening to number input changes. The value accessor is used by the FormControlDirective, FormControlName, and NgModel directives.

NgModules

Selectors

Properties

Property Description
onChange: (_: any) => { }

The registered callback function called when a change or input event occurs on the input element.

onTouched: () => { }

The registered callback function called when a blur event occurs on the input element.

Description

Using a number input with a reactive form.

The following example shows how to use a number input with a reactive form.

const totalCountControl = new FormControl();
<input type="number" [formControl]="totalCountControl">

Methods

Sets the "value" property on the input element.

writeValue(value: number): void

Parameters
value number

The checked value

Returns

void

Registers a function called when the control value changes.

registerOnChange(fn: (_: number) => void): void

Parameters
fn (_: number) => void

The callback function

Returns

void

Registers a function called when the control is touched.

registerOnTouched(fn: () => void): void

Parameters
fn () => void

The callback function

Returns

void

Sets the "disabled" property on the input element.

setDisabledState(isDisabled: boolean): void

Parameters
isDisabled boolean

The disabled value

Returns

void

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Licensed under the Creative Commons Attribution License 4.0.
https://angular.io/api/forms/NumberValueAccessor