set class using angular code example
Example 1: Angular 8 ngClass If
[ngClass]="{'my-class': step=='step1'}"
Example 2: Angular 8 ngClass If
[ngClass]="{1:'my-class1',2:'my-class2',3:'my-class4'}[step]"
[ngClass]="{'my-class': step=='step1'}"
[ngClass]="{1:'my-class1',2:'my-class2',3:'my-class4'}[step]"