AngularJS $routeProvider.resolve

main.js

var app = angular.module("app", ["ngRoute"]);

app.config(function ($routeProvider) {
    $routeProvider
        .when('/', {
            templateUrl: "app.html",
            controller: "ViewCtrl",
            resolve: {
                first: function () {
                    return "Hello world";
                },
                second: function ($q, $timeout) {
                    var defer = $q.defer();
                    $timeout(function () {
                        defer.reject("Your network is down");
                    }, 500);
                    return defer.promise;
                }
            }
        })
});

app.run(function ($rootScope) {
    $rootScope.$on("$routeChangeError", function (event, current, previous, rejection) {
        console.log(event);
    })
});

app.controller("ViewCtrl", function ($scope, first, second) {
    console.log(first, second);
    $scope.model = {
        message: "I'm a great app!"
    }
});