Explain a scenario where the use of $watch in AngularJS controllers for data binding might lead to performance issues.

  • Monitoring form input changes
  • Observing static configuration settings
  • Tracking user authentication
  • Watching large arrays or collections
Using $watch in AngularJS controllers for data binding might lead to performance issues in scenarios involving large arrays or collections. When monitoring extensive data sets with $watch, AngularJS has to constantly check for changes, which can be resource-intensive. This can result in decreased performance and responsiveness, especially in applications dealing with substantial amounts of dynamic data. Recognizing the limitations of $watch is crucial for optimizing data binding in AngularJS applications.
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