Answers for "how to wite else conditinon in ngclass angular"

ngclass else

<p class="{{condition ? 'checked' : 'unchecked'}}">
<!-- or -->
<p [ngClass]="condition ? 'checked' : 'unchecked'">
<!--or -->
<p [ngClass]="[condition ? 'checked' : 'unchecked']">

ngclass condition

[ngClass]="{'my-class': step === 'step1', 'my-class2':step === 'step2' }"