Prevent AngularJS Flicker: Delaying Route Change Until Model Loaded

AngularJS is a popular JavaScript framework used in web development for creating dynamic single-page applications. However, sometimes when navigating between routes, there can be a flicker effect due to the delay in loading the data model for the new route.

To prevent this flicker effect, you can delay the route change until the model is loaded. This can be achieved by using the $routeChangeStart and $routeChangeSuccess events in AngularJS.

First, in your controller, you can use the $routeChangeStart event to set a variable indicating that the route change is in progress:

<script>
  app.controller('MyController', function($rootScope) {
    $rootScope.$on('$routeChangeStart', function() {
      $rootScope.routeLoading = true;
    });
  });
</script>

Then, you can use the $routeChangeSuccess event to set the variable to false when the data model has finished loading:

<script>
  app.controller('MyController', function($rootScope) {
    $rootScope.$on('$routeChangeStart', function() {
      $rootScope.routeLoading = true;
    });

    $rootScope.$on('$routeChangeSuccess', function() {
      $rootScope.routeLoading = false;
    });
  });
</script>

Finally, in your view, you can use the ng-show directive to delay the display of the new route until the data model has finished loading:

<div ng-show="!routeLoading">
  <!-- Your route content here -->
</div>

By using these events and directives, you can prevent the flicker effect when navigating between routes in your AngularJS application.