how to check *ngif value is empty in angular code example

Example: angular ngif condition empty or null

<h1>angular ngif check array empty example - itsolutionstuff.com</h1>  <div *ngIf="myVar?.length">  <p>Array is not empty.</p></div>  <div *ngIf="!myVar?.length">  <p>Array is empty.</p></div>