How to correctly use ng-cloak directive?

Add this css from here

[ng\:cloak], [ng-cloak], [data-ng-cloak], [x-ng-cloak], .ng-cloak, .x-ng-cloak {
  display: none !important;
}

and use either the class name or attribute on your parent div or anywhere you have defined your app.

eg:

<div ng-app="Random" class="ng-cloak">
</div>