Imagine you're building an Angular application that requires a directive to format and validate phone numbers in real-time. How would you implement this functionality?

  • Create a component to handle phone number formatting and validation
  • Create a service for formatting and validation
  • Implement a custom directive to handle formatting and validation
  • Use Angular's built-in ngModel and ngModelChange to format and validate phone numbers
To achieve this functionality, you would implement a custom directive to format and validate phone numbers. Directives are used to add behavior to DOM elements.
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