Angular has introduced a new service called the Meta service that simplifies updating or getting the meta tags:

@Component({   
  selector: 'book-list',   
  template: `<h1>Book   List</h1>`   
})   
export class BookComponent {   
  constructor(meta: Meta) {   
    meta.addTag({ name: 'author',   content: 'Rajesh Gunasundaram' });   
  }   
}