Describe the role of $scope.$apply() in AngularJS.
- It is used for defining custom watches in AngularJS
- It manually updates the view without involving the $digest cycle
- It removes the current scope from the $digest cycle
- It triggers a $digest cycle on the current scope and its children
$scope.$apply() in AngularJS is used to trigger a $digest cycle on the current scope and its children. It is typically used when changes to the model occur outside of AngularJS (e.g., in event handlers). By using $scope.$apply(), developers can ensure that AngularJS is aware of the changes and updates the view accordingly, preventing issues with data binding.
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