$route is used for deep-linking URLs to controllers and views (HTML partials).
It watches $location.url() and tries to map the path to an existing route definition.
Requires the ngRoute module to be installed.
You can define routes through $routeProvider's API.
The $route service is typically used in conjunction with the
ngView directive and the
$routeParams service.
reload();
updateParams(newParams);
Causes $route service to update the current URL, replacing
current route parameters with those specified in newParams.
Provided property names that match the route's path segment
definitions will be interpolated into the location's path, while
remaining properties will be treated as query params.
| Param | Type | Details | 
|---|---|---|
| newParams | !Object<string, string> | mapping of URL parameter names to values | 
Broadcasted before a route change. At this  point the route services starts
resolving all of the dependencies needed for the route change to occur.
Typically this involves fetching the view template as well as any dependencies
defined in resolve route property. Once  all of the dependencies are resolved
$routeChangeSuccess is fired.
The route change (and the $location change that triggered it) can be prevented
by calling preventDefault method of the event. See $rootScope.Scope
for more details about event object.
| Param | Type | Details | 
|---|---|---|
| angularEvent | Object | Synthetic event object. | 
| next | Route | Future route information. | 
| current | Route | Current route information. | 
Broadcasted after a route change has happened successfully.
The resolve dependencies are now available in the current.locals property.
ngView listens for the directive to instantiate the controller and render the view.
| Param | Type | Details | 
|---|---|---|
| angularEvent | Object | Synthetic event object. | 
| current | Route | Current route information. | 
| previous | RouteUndefined | Previous route information, or undefined if current is first route entered. | 
Broadcasted if a redirection function fails or any redirection or resolve promises are rejected.
| Param | Type | Details | 
|---|---|---|
| angularEvent | Object | Synthetic event object | 
| current | Route | Current route information. | 
| previous | Route | Previous route information. | 
| rejection | Route | The thrown error or the rejection reason of the promise. Usually the rejection reason is the error that caused the promise to get rejected. | 
Broadcasted if the same instance of a route (including template, controller instance,
resolved dependencies, etc.) is being reused. This can happen if either reloadOnSearch or
reloadOnUrl has been set to false.
| Param | Type | Details | 
|---|---|---|
| angularEvent | Object | Synthetic event object | 
| current | Route | Current/previous route information. | 
current| Object | Reference to the current route definition. The route definition contains: 
 | 
routes| Object | Object with all route configuration Objects as its properties. | 
This example shows how changing the URL hash causes the $route to match a route against the
URL, and the ngView pulls in the partial.
<div ng-controller="MainController">
  Choose:
  <a href="Book/Moby">Moby</a> |
  <a href="Book/Moby/ch/1">Moby: Ch1</a> |
  <a href="Book/Gatsby">Gatsby</a> |
  <a href="Book/Gatsby/ch/4?key=value">Gatsby: Ch4</a> |
  <a href="Book/Scarlet">Scarlet Letter</a><br/>
  <div ng-view></div>
  <hr />
  <pre>$location.path() = {{$location.path()}}</pre>
  <pre>$route.current.templateUrl = {{$route.current.templateUrl}}</pre>
  <pre>$route.current.params = {{$route.current.params}}</pre>
  <pre>$route.current.scope.name = {{$route.current.scope.name}}</pre>
  <pre>$routeParams = {{$routeParams}}</pre>
</div>controller: {{name}}<br />
Book Id: {{params.bookId}}<br />controller: {{name}}<br />
Book Id: {{params.bookId}}<br />
Chapter Id: {{params.chapterId}}angular.module('ngRouteExample', ['ngRoute'])
 .controller('MainController', function($scope, $route, $routeParams, $location) {
     $scope.$route = $route;
     $scope.$location = $location;
     $scope.$routeParams = $routeParams;
 })
 .controller('BookController', function($scope, $routeParams) {
     $scope.name = 'BookController';
     $scope.params = $routeParams;
 })
 .controller('ChapterController', function($scope, $routeParams) {
     $scope.name = 'ChapterController';
     $scope.params = $routeParams;
 })
.config(function($routeProvider, $locationProvider) {
  $routeProvider
   .when('/Book/:bookId', {
    templateUrl: 'book.html',
    controller: 'BookController',
    resolve: {
      // I will cause a 1 second delay
      delay: function($q, $timeout) {
        var delay = $q.defer();
        $timeout(delay.resolve, 1000);
        return delay.promise;
      }
    }
  })
  .when('/Book/:bookId/ch/:chapterId', {
    templateUrl: 'chapter.html',
    controller: 'ChapterController'
  });
  // configure html5 to get links working on jsfiddle
  $locationProvider.html5Mode(true);
});it('should load and compile correct template', function() {
  element(by.linkText('Moby: Ch1')).click();
  var content = element(by.css('[ng-view]')).getText();
  expect(content).toMatch(/controller: ChapterController/);
  expect(content).toMatch(/Book Id: Moby/);
  expect(content).toMatch(/Chapter Id: 1/);
  element(by.partialLinkText('Scarlet')).click();
  content = element(by.css('[ng-view]')).getText();
  expect(content).toMatch(/controller: BookController/);
  expect(content).toMatch(/Book Id: Scarlet/);
});