How to mix this this two ng-class sentences

Question

I have this two ng-class sentences. How can I mix them into one:

ng-class="['step-0' + main.activeConnectStep]"

ng-class="{'active': main.activeConnectStep > 0 }"

Answer 1

Using array notation:

ng-class="['step-0' + main.activeConnectStep, main.activeConnectStep > 0 ? 'active' : '']"