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I am trying to make a simple single page mobile app with multiple views and a nextack button to control each view. I am using the Angular Mobile UI library.

The basic mockup is as follows:

<html>
    <head>
        <link rel="stylesheet" href="mobile-angular-ui/dist/css/mobile-angular-ui-base.min.css">
        <link rel="stylesheet" href="mobile-angular-ui/dist/css/mobile-angular-ui-desktop.min.css">

        <script src="js/angular/angular.min.js"></script>
        <script src="js/angular/angular-route.min.js"></script>
        <script src="mobile-angular-ui/dist/js/mobile-angular-ui.min.js"></script>

        <script src="app/app.js"></script>
        <script src="app/firstController.js"></script>
        <script src="app/secondController.js"></script>
        <script src="app/thirdController.js"></script>

    </head>

    <body ng-app="demo-app">
        <div ng-view></div>

        <div ng-controller="nextBackController" class="navbar navbar-app navbar-absolute-bottom">
            <div class="btn-group justified">
              <a href="#/" class="btn btn-navbar btn-icon-only"><i class="fa fa-home fa-navbar"></i></a>
              <a href="#/second" class="btn btn-navbar btn-icon-only"><i class="fa fa-list fa-navbar"></i></a>
            </div>
        </div>

    </body>


</html>

App.js is as follows:

var app = angular.module('demo-app', [
  "ngRoute",
  "mobile-angular-ui"
]);

app.config(function($routeProvider) {
  $routeProvider.when('/', { controller: "firstController",
                             templateUrl: "views/first.html"});
  $routeProvider.when('/', { controller: "secondController",
                             templateUrl: "views/first.html"});
  $routeProvider.when('/', { controller: "thirdController",
                             templateUrl: "views/first.html"});
});

controllers = {};

controllers.nextBackController = function($scope, $rootScope) {
    //Simple controller for the next, back buttons so we just put it in app.js
};

app.controller(controllers);

firstController.js will contain something similar to:

controllers.firstController = function($scope) {
    //Do our logic here!!!
};

The problem is if you notice at the top of the HTML page I have to load all the controllers in. This is not scalable. I want each controller to be in it's own JS file and not have to statically load each one since the user may never even require that controller. Is there a way to dynamically load the actual JS file when switching routes? or can I stick a script tag at the top of my "first.html", "second.html", etc.

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1 Answer

If I understand correctly you need to load specific scripts for each view? I am sharing this snippet from a personal project that uses ocLazyLoader a plugin that loads modules on demand.

var myApp = angular.module("myApp", [
"ui.router", 
"oc.lazyLoad",  
]); 

then in your routing you could load dynamic JS / CSS files accordingly, in this example I am loading the UI Select plugin dependencies

myApp.config(['$stateProvider', '$urlRouterProvider', function($stateProvider, $urlRouterProvider) {

$stateProvider

  // State
    .state('demo', {
        url: "/demo.html",
        templateUrl: "views/demo.html",
        data: {pageTitle: 'demo page title'},
        controller: "GeneralController",
        resolve: {
            deps: ['$ocLazyLoad', function($ocLazyLoad) {
                return $ocLazyLoad.load([{
                    name: 'ui.select',
 // add UI select css / js for this state
                    files: [
                        'css/ui-select/select.min.css', 
                        'js/ui-select/select.min.js'
                    ] 
                }, {
                    name: 'myApp',
                    files: [
                        'js/controllers/GeneralController.js'
                    ] 
                }]);
            }]
        }
    })

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