How to watch for a route change in AngularJS?

问题:

How would one watch/trigger an event on a route change?

回答1:

Note: This is a proper answer for a legacy version of AngularJS. See this question for updated versions.

$scope.$on(\'$routeChangeStart\', function($event, next, current) { 
   // ... you could trigger something here ...
 });

The following events are also available (their callback functions take different arguments):

• $routeChangeSuccess
• $routeChangeError
• $routeUpdate - if reloadOnSearch property has been set to false

See the $route docs.

There are two other undocumented events:

• $locationChangeStart
• $locationChangeSuccess

See What's the difference between $locationChangeSuccess and $locationChangeStart?

回答2:

If you don\'t want to place the watch inside a specific controller, you can add the watch for the whole aplication in Angular app run()

var myApp = angular.module(\'myApp\', []);

myApp.run(function($rootScope) {
    $rootScope.$on(\"$locationChangeStart\", function(event, next, current) { 
        // handle route changes     
    });
});

回答3:

$rootScope.$on( \"$routeChangeStart\", function(event, next, current) {
  //..do something
  //event.stopPropagation();  //if you don\'t want event to bubble up 
});

回答4:

$rootScope.$on( \"$routeChangeStart\", function(event, next, current) {
  //if you want to interrupt going to another location.
  event.preventDefault();  });