Is there a way to preload templates when using AngularJS routing?

This is an addition to the answer by @gargc.

If you don't want to use the script tag to specify your template, and want to load templates from files, you can do something like this:

    myApp.run(function ($templateCache, $http) {        $http.get('Template1.html', { cache: $templateCache });    });    myApp.config(function ($locationProvider, $routeProvider) {        $routeProvider.when('/p1', { templateUrl: 'Template1.html' })    });

There is a template cache service: $templateCache which can be used to preload templates in a javascript module.

For example, taken from the docs:

var myApp = angular.module('myApp', []);  myApp.run(function($templateCache) {  $templateCache.put('templateId.html', 'This is the content of the template');});

There is even a grunt task to pre-generate a javascript module from html files: grunt-angular-templates

Another way, perhaps less flexible, is using inline templates, for example, having a script tag like this in your index.html:

<script type="text/ng-template" id="templates/Template1.html">template content</script>

means that the template can be addressed later in the same way as a real url in your route configuration (templateUrl: 'templates/Template1.html')

I think I have a slightly improved solution to this problem based on Raman Savitski's approach, but it loads the templates selectively. It actually allows for the original syntax that was asked for like this:

$routeProvider.when('/p1', { controller: controller1, templateUrl: 'Template1.html', preload: true })

This allows you to just decorate your route and not have to worry about updating another preloading configuration somewhere else.

Here is the code that runs on start:

angular.module('MyApp', []).run([    '$route', '$templateCache', '$http', (function ($route, $templateCache, $http) {        var url;        for (var i in $route.routes) {            if ($route.routes[i].preload) {                if (url = $route.routes[i].templateUrl) {                    $http.get(url, { cache: $templateCache });                }            }        }    })]);