# Angular js/javascript count how many times an iteration

I have my code below i wanted to know how will i get the count of all $scope.rm that is equal to failed or how many$scope.percentage < 50.

angular.forEach(result1, function (value, key) {

$scope.percentage = (value.score * 100 / value.total).toFixed(2); if ($scope.percentage < 50) {
$scope.rm = "Failed"$rootScope.sendmail = 0

}else {
$scope.rm = "Passed"$rootScope.sendmail = 1
}

});


Source: AngularJS