AngularJS - New array from object array based on property value

angSortArr.js

$scope.sortedArr = function(prop, propVal, masterArr){
	var newArr = [];
	angular.forEach(masterArr, function(value, key) {
		if(angular.equals(value[prop], propVal)){ newArr.push(value); }
	});
	return newArr;
};

var objArr = [
	{ "first_name" : "George", "last_name" : "Washington" }, 
	{ "first_name" : "John", "last_name" : "Adams" }, 
	{ "first_name" : "George", "last_name" : "Harrison" }, 
	{ "first_name" : "John", "last_name" : "Mellancamp" }, 
	{ "first_name" : "George", "last_name" : "Jetson" },
	{ "first_name" : "John", "last_name" : "Bravo" }
];

var fNameArr = $scope.sortedArr('first_name', 'George', objArr);