How to make anchor links work seamlessly with AngularJS routing?

Navigating Anchors Seamiessly in AngularJS

Background:

Navigating anchor hash links can be tricky in AngularJS due to its default routing mechanism. This issue arises when clicking on an anchor link results in AngularJS routing to a different page instead of smoothly scrolling to the intended element within the existing page.

Solution: Using $anchorScroll()

To resolve this, AngularJS provides the invaluable $anchorScroll() service. This service allows developers to manually scroll to specific elements based on their ID attributes. By leveraging this capability, you can control the scrolling behavior of anchor links and navigate within the same page effortlessly.

Implementation in Controller:

To use $anchorScroll(), inject it into your controller and define a function that takes the desired element ID as an argument. Within this function, update the $location.hash() to match the target element's ID and then invoke $anchorScroll().

app.controller('TestCtrl', function($scope, $location, $anchorScroll) {
   $scope.scrollTo = function(id) {
      $location.hash(id);
      $anchorScroll();
   }
});

Usage:

Place an anchor link in your HTML markup and bind it to the scrollTo() function. When clicked, this link will scroll to the corresponding element on the page.

<a ng-click="scrollTo('foo')">Foo</a>
<div id="foo">Here you are</div>

Integrating with Angular Routing:

To make this solution work in conjunction with Angular routing, add the following code to your run block. This code listens for route changes and, upon a successful change, scrolls to the element specified by the scrollTo parameter in the URL.

app.run(function($rootScope, $location, $anchorScroll, $routeParams) {
  $rootScope.$on('$routeChangeSuccess', function(newRoute, oldRoute) {
    $location.hash($routeParams.scrollTo);
    $anchorScroll();  
  });
});

Simplified Approach:

For an even simpler solution, you can modify the run block to handle all hash changes. This will scroll to any element with an ID matching the hash value.

app.run(function($rootScope, $location, $anchorScroll) {
  $rootScope.$on('$routeChangeSuccess', function(newRoute, oldRoute) {
    if($location.hash()) $anchorScroll();  
  });
});

The above is the detailed content of How to make anchor links work seamlessly with AngularJS routing?. For more information, please follow other related articles on the PHP Chinese website!