disable an angular button using typescript code example

Example 1: disable button typescript

(document.getElementById('button') as HTMLInputElement).disabled = false;

Example 2: button disabled angular

<form #f="ngForm" (ngSubmit)="onSubmit(f)" novalidate>
  <input required name="uri" [(ngModel)]="data">
  <button [disabled]="!f.valid">Submut</button>
</form>