Using comma as a list separator in Angular 2

Question

I want to create a list of items in my template, separated by commas, but I don\'t want the last item to have a comma:

one, two, three

How

Answer 1

I have just needed todo this but my value is in an attribute so the marked answer did not work.

Someone may find this helpful :

I used a pipe, I could have built the string up but felt a pipe would be more readable

CLI

ng g p Delimiter

Pipe

import { Pipe, PipeTransform } from '@angular/core';
@Pipe({
  name: 'delimiter'
})
export class DelimiterPipe implements PipeTransform {
  transform(value: string, delimiter: string, isLast: boolean)  {
    return !isLast ? value + delimiter : value;
  }
}

View

I needed some html in my view hence my need to use the attribute, eg