angular material based on status class condition code example

Example 1: Angular 8 ngClass If

[ngClass]="(step=='step1')?'my-class1':'my-class2'"

Example 2: Angular 8 ngClass If

[ngClass]="{1:'my-class1',2:'my-class2',3:'my-class4'}[step]"

Example 3: Angular 8 ngClass If

[class.my-class]="step=='step1'"