Answers for "ng if in angularjs"

ng if

[ngClass]="{'my_class': step === 'step1', 'my_class2' : step === 'step2' }"

ng if

<ng-template [ngIf]="heroes" [ngIfElse]="loading">
 <div class="hero-list">
  ...
 </div>
</ng-template>

<ng-template #loading>
 <div>Loading...</div>
</ng-template>

ng-if

<label>Click me: <input type="checkbox" ng-model="checked" ng-init="checked=true" /></label><br/>
Show when checked:
<span ng-if="checked" class="animate-if">
  This is removed when the checkbox is unchecked.
</span>