Coding⏱️ 2 min read📅 2026-05-31

How to Fix: AngularJS : Prevent error $digest already in progress when calling $scope.$apply()

Avoid $digest already in progress error by using $promise or $q, and update scope manually only when necessary.

Quick Answer: Use $promise or $q to handle asynchronous operations and update scope manually only when necessary.

The error $digest already in progress when calling $scope.$apply() is a common issue in AngularJS applications. This error occurs when the application is trying to digest the current scope while another digest operation is already in progress.

🛑 Root Causes of the Error

  • The most common cause is when you're trying to update the scope manually using $apply() in a directive or controller.

✅ Best Solutions to Fix It

Method 1: Using $timeout() or $promise

  1. Step 1: Instead of using $apply(), use the $timeout() function to schedule a digest operation.

Method 2: Using async/await

  1. Step 1: Use the Promise API to handle asynchronous operations and avoid using $apply().

✨ Wrapping Up

To summarize, when working with AngularJS, it's essential to understand the root causes of the $digest already in progress error. By using $timeout() or async/await, you can avoid this error and ensure a smoother user experience.

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