angular-beforeunload

Confirm dialog pop up if they try and (or accidently click away from) the page.
``javascript
angular.module('YOUR_APP', [
'angular-beforeunload'
])
.controller('MainCtrl', function(BeforeUnload) {
// Bind a listener on your current $scope and save reference to it.
var onbeforeunload = $scope.$on('$locationChangeStart', BeforeUnload.init('TOP_MESSAGE', 'BOTTOM_MESSAGE'))
// In this controller the user will be prompted to
// confirm their choice before they change their location.
$scope.submitPage = function() {
// If you invoking your reference then your listener becomes null.
onbeforeunload();
};

});
``