How can I implement smooth anchor hash linking in AngularJS applications?

Handling Anchor Hash Linking in AngularJS

If you're facing issues with anchor hash linking in AngularJS, there's a simple solution available: $anchorScroll().

AngularJS provides the $anchorScroll() service, which allows you to easily scroll to any element with an ID found in $location.hash(). Here's how you can use it:

<code class="javascript">app.controller('TestCtrl', function($scope, $location, $anchorScroll) {
   $scope.scrollTo = function(id) {
      $location.hash(id);
      $anchorScroll();
   }
});</code>

In your markup, you can then use the ng-click directive to trigger the scrolling action:

<code class="html"><a ng-click="scrollTo('foo')">Foo</a>

<div id="foo">Here you are</div></code>

Integration with AngularJS Routing

To use $anchorScroll() with AngularJS routing, follow these steps:

1. Configure the routing as you normally would.
2. Add the following code:

<code class="javascript">app.run(function($rootScope, $location, $anchorScroll, $routeParams) {
  //when the route is changed scroll to the proper element.
  $rootScope.$on('$routeChangeSuccess', function(newRoute, oldRoute) {
    $location.hash($routeParams.scrollTo);
    $anchorScroll();  
  });
});</code>

Here's an example link with routing:

<code class="html"><a href="#/test?scrollTo=foo">Test/Foo</a></code>

For an even simpler approach, you can use this code:

<code class="javascript">app.run(function($rootScope, $location, $anchorScroll) {
  //when the route is changed scroll to the proper element.
  $rootScope.$on('$routeChangeSuccess', function(newRoute, oldRoute) {
    if($location.hash()) $anchorScroll();  
  });
});</code>

And the corresponding link:

<code class="html"><a href="#/test#foo">Test/Foo</a></code>

With these solutions, you can seamlessly link to anchors and scroll to the corresponding content within your AngularJS application.

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