angular 2: combining *ngIf and *ngFor executes loop with a last undefined item

Question

http://plnkr.co/edit/ihdAJuUcyOj5Ze93BwIQ?p=preview

import { Component } from \'@angular/core\';

@Component({
  selector: \'my-app\',
  template: `
    


        
      

Answer 1

You can also use this