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Angular 6 Custom Pipe | with Parameterizing a pipe | Angular Pure pipes + Impure pipes
Angular 6 Custom Pipe | with Parameterizing a pipe | Angular Pure pipes + Impure pipes
In the tutorial, we show how to create an Angular Custom Pipe with Angular Pure Pipe, and Angular Impure Pipe.
Related posts:
- Angular Built-in DatePipe Example | Pre-defined Format + Timezone + Locale + Custom Format
- Angular 6 – KeyValue Pipe – *ngFor Loop through Object, Map example – How to Integrate Bootstrap with Angular (Angular 6) – Angular 6 Component – How to create & integrate New Angular 6 Component – Angular NgFor Repeater Directive – Loop over a Collection (Angular 6)
Related pages:
Custom Pipe
We can write our own custom pipes.
Example: create a pipe that calculates a logarithm of a number with the base value.
->
import { Pipe, PipeTransform } from '@angular/core';
@Pipe({name: 'logbase'})
export class Logarithm implements PipeTransform {
transform(value: number, base: number): string {
return (Math.log(value) / Math.log(base)).toPrecision(2);
}
}
- The
@Pipe
decorator allows you to define the pipe name that you'll use within template expressions. -
PipeTransform
interface'stransform
method that accepts an input value followed by optional parameters and returns the transformed value. ->
Angular 6 Custom Pipe | with Parameterizing a pipe | Angular Pure pipes + Impure pipes
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