angular.module('myApp', [])
.controller('Tadam', function() {
var vm = this;
vm.number = 0;
vm.do = function() {
vm.pressed = true;
vm.number++;
}
});
<div ng-app="myApp" ng-controller="Tadam as tadam">
<div ng-show="tadam.pressed">Тадам!</div>
<button ng-click="tadam.do()">Нажми меня</button>
<span>Тадамов случилось:</span>
<span ng-bind="tadam.number"></span>
</div>