ngShow Example
HTML
<script src="http://code.angularjs.org/1.2.0-rc.2/angular.js"></script>
<div ng-app="app">
<div ng-controller="MainController">
<div class="text-center" ng-show="loading">
<h1>!</h1>
</div>
</div>
</div>
JavaScript
angular.module('app', []).
controller('MainController', ['$scope', '$timeout', function ($scope, $timeout) {
$scope.loading = true;
$timeout(function () {
$scope.loading = false;
}, 1000);
}]);