Quickly toggling classes with Angular

gistfile1.html

<!-- Parent -->
<div ng-class="{true: ‘these classes when true’, false: ‘these classes when false’}[variable]">
    <!-- Child -->
    <button ng-click="variable = !variable">Toggle me bro</button>
</div>

<!-- Shorthand when just toggling visibility -->
<div ng-toggle="variable">
    <!-- Child -->
    <button ng-click="variable = !variable">Toggle me bro</button>
</div>