conditional class code example
Example 1: ngclass condition
[ngClass]="(step=='step1')?'my-class1':'my-class2'"
Example 2: Angular 8 ngClass If
[ngClass]="{'my-class': step=='step1', 'my-class2':step=='step2' }"
Example 3: add classon ng if
[ngClass]="{'my-class': step === 'step1'}"