Setting Page Title Dynamically In AngularJS WordPress Theme

scripts.js

//...

//Main controller
app.controller('Main', ['$scope', '$http', function($scope, $http) {
	$http.get('wp-json/posts/').success(function(res){
		$scope.posts = res;
		document.querySelector('title').innerHTML = 'Home | AngularJS Demo Theme';
	});
}]);

//Content controller
app.controller('Content', ['$scope', '$routeParams', '$http', function($scope, $routeParams, $http) {
	$http.get('wp-json/posts/' + $routeParams.ID).success(function(res){
		$scope.post = res;
		document.querySelector('title').innerHTML = res.title + ' | AngularJS Demo Theme';
	});
}]);

//...