lastinngfor/last.directive.ts

get trigget when last element of ng for loop

import {Directive, ElementRef, Input, Output, EventEmitter} from '@angular/core';

@Directive({selector: '[isLast]'})
export class LastDirective{
    @Input() isLast:boolean;
    @Output() lastDone:EventEmitter<boolean> = new EventEmitter<boolean>();
    ngOnInit() {
        if(this.isLast) {
            this.lastDone.emit(true);
        }
    }
}