What is Change Detection Strategy, when and how to use it?

Question

Angular

What is Change Detection Strategy, when and how to use it?

Answer 1

This is a strategy for checking for changes in a component. When a component changes, Angular rebuilds its DOM node. This is not a cheap operation in terms of performance.
If you set ChangeDetectionStategy.OnPush on a component, then it will only re-render the component when its @Input() and @Output() properties change. In other cases, this will not happen. This will improve the performance of the application.
Read more: https://angular-2-training-book.rangle.io/handout/...