angular contitional class every second in list code example
Example 1: ngclass condition
[ngClass]="(step=='step1')?'my-class1':'my-class2'"
Example 2: 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>