PipeTransform

From Get docs
< @angular/coreAngular/docs/10/api/core/pipetransform


PipeTransform

interface

An interface that is implemented by pipes in order to perform a transformation. Angular invokes the transform method with the value of a binding as the first argument, and any parameters as the second argument in list form.

interface PipeTransform {
  transform(value: any, ...args: any[]): any
}

Class implementations

  • AsyncPipe
  • DatePipe
  • I18nPluralPipe
  • I18nSelectPipe
  • JsonPipe
  • LowerCasePipe
  • CurrencyPipe
  • DecimalPipe
  • PercentPipe
  • SlicePipe
  • UpperCasePipe
  • TitleCasePipe
  • KeyValuePipe


Methods

transform(value: any, ...args: any[]): any

Parameters
value any
args any[]
Returns

any


Usage notes

In the following example, RepeatPipe repeats a given value a given number of times.

import {Pipe, PipeTransform} from '@angular/core';

@Pipe({name: 'repeat'})
export class RepeatPipe implements PipeTransform {
  transform(value: any, times: number) {
    return value.repeat(times);
  }
}

Invoking Template:'ok' in a template produces okokok.


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Licensed under the Creative Commons Attribution License 4.0.
https://v10.angular.io/api/core/PipeTransform