Working with change detection

Change detection is the process by which Angular determines if components need to be updated in response to data changes. Whenever the data-bound properties of a component change, Angular checks if the view needs to be updated to reflect those changes. This process is automatic, but it’s essential to understand its workings to optimize performance.

How does change detection work?

The change detection process in Angular follows a unidirectional flow. It starts from the root component and traverses down the component tree, checking for changes in each component. Here’s a brief overview of how change detection works in Angular:

1. Initialization: During component initialization, Angular sets up the component’s change detector and initializes the component’s properties and bindings.
2. Change detection strategy: Angular provides two change detection strategies:
   • The Default strategy triggers change detection for a component...