index.jade

extends layout
block scripts
   script(src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js")
   script(src="javascripts/index.js")

block content
    div(ng-app="nightlife" ng-controller="NightlifeCtrl as nl")
        button(class="btn" ng-click="findBars()")
            | Find local bars
        div(ng-repeat="bar in bars")
            h4.ng-cloak {{ bar.name }}

javascript forwardslash index.js

angular.module('nightlife', [])
    .controller('NightlifeCtrl', ['$scope', function ($scope) {
        $scope.bars = [{name: 'ayo'}];
        $scope.user = {};
        $scope.latLong = '';

        function getLocation() {
            navigator.geolocation.getCurrentPosition(function (position) {
                var latitude  = position.coords.latitude;
                var longitude = position.coords.longitude;
                $scope.latLong = latitude + ',' + longitude;
            });
        }

        getLocation();

        $scope.findBars = function findBars() {
            if ($scope.latLong) {
                $.ajax('/city',
                    {
                        type: 'GET',
                        data: {
                            location: $scope.latLong
                        },
                        success: function(res){
                            $scope.$apply(function(){
                                $scope.bars = res;
                            })
                        }
                    }

                );
            }
        }

    }]);