Automatically scroll to specific states on Angular UI Router

I have implemented a controller that automatically scrolls the window to the top whenever a state change is initiated:

$rootScope.$on('$stateChangeStart',function(){
  window.scrollTo(0, 0);
});

However, I am facing an issue where certain states trigger the $stateChangeStart and also scroll to the top. I would like to prevent this behavior on those specific views/states.

Here are the routes defined in my application:

'use strict'

angular.module('myApp')
.config(function($stateProvider) {
  $stateProvider
  .state('everywhere', {
    url: '/everywhere',
    templateUrl: 'client/everywhere/everywhere.view.ng.html',
    controller: 'everywhereCtrl'
  })
  .state('everywhere.instructions', {
    url: '/instructions',
    templateUrl: 'client/everywhere/instructions/instructions.view.ng.html',
    controller: 'everywhereCtrl'
  })
  .state('everywhere.instructions', {
    url: '/others',
    templateUrl: 'client/everywhere/others/others.view.ng.html',
    controller: 'everywhereCtrl'
  });
});

and here is the view structure:

<div class="container-fluid" id="view" name="view">
    <div class="col-md-12 text-center margin-bottom margin-top">
    <ul class="nav nav-pills center-pills">
      <li class="everywhere" ui-sref-active="active"><a ui-sref="everywhere.instructions">Instructions</a></li>
      <li class="everywhere" ui-sref-active="active"><a ui-sref="everywhere.others">Others</a></li>
    </ul>
  </div>
</div>

<div ui-view root-state="everywhere"></div>

Can anyone guide me on how to disable the auto-scroll to top feature on specific states? Your help will be greatly appreciated.

Thank you!

Answer №1

ui-router provides the flexibility to attach custom information to each state. For instance, you can include a boolean flag like noscroll in states where scrolling is not desired.

.state('everywhere.instructions', {
  url: '/instructions',
  templateUrl: 'client/everywhere/instructions/instructions.view.ng.html',
  controller: 'everywhereCtrl',
  // disable scrolling for this state
  data: {
    noscroll: true,
  }
})

In the $stateChangeStart event listener, you can verify if the toState has been marked with noscroll

$rootScope.$on('$stateChangeStart',function(event, toState, toParams, fromState, fromParams){
  if (toState.data && toState.data.noscroll) {
    return;
  }

  window.scrollTo(0, 0);
});

Notice how I included the callback function parameters in the event listener. Check the documentation for more details.

If needed, you could reverse this logic and only scroll to the top when a state specifies scrollToTop. Choose the approach that aligns best with your requirements.

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