Can't bind to 'class-glyphicon-star-empty' since it isn't a known property of 'I'.

See more:

Typescript

angular-cli

Angular 4.
app.component.ts

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

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'app';
}

app.component.html
<div>isFavorite: {{isFavorite}}</div>
<button (click)="onClick()">toggle</button>

<i class="glyphicon"
[class-glyphicon-star-empty]="!isFavorite"
[class-glyphicon-star]="isFavorite"
(click)="onClick()">
</i>

favorite.component.ts

import { Component, OnInit,Input } from '@angular/core';

@Component({
  selector: 'app-favorite',
  templateUrl: './favorite.component.html',
  styleUrls: ['./favorite.component.css']
})
export class FavoriteComponent implements OnInit {

   @Input() isFavorite = false;

    onClick() {
        this.isFavorite = !this.isFavorite;
    }
  constructor() { }

  ngOnInit() {
  }

}

However it has the error

Can't bind to 'class-glyphicon-star-empty' since it isn't a known property of 'i'.

What I have tried:

I tried angular - angular2 @input not working - Stack Overflow[^]
It is a little different from the link. I use templateUrl. The link uses template. Still not working.