add ngclass without conditionangular 6 example

Example 1: if condition in class angular 8

<i [class]="user.login_status == 1 ? 'fas fa-circle user_active' : 'fas fa-circle user_inactive'" aria-hidden="true"></i>

Example 2: add classon ng if

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