How to Use ngOnDestroy in Angular 17

Understanding ngOnDestroy in Angular

The ngOnDestroy lifecycle hook is a crucial method in Angular that allows developers to perform cleanup operations when a component is about to be destroyed. This hook is essential for preventing memory leaks and ensuring efficient resource management in your Angular applications.

Key Aspects of ngOnDestroy

• Identifies when a component is about to be removed from the DOM
• Provides an opportunity to unsubscribe from observables
• Allows detaching event listeners
• Enables custom cleanup logic implementation

Practical Implementation

When implementing ngOnDestroy, focus on releasing resources that could potentially cause memory leaks. This typically involves:

• Unsubscribing from RxJS observables
• Removing event listeners
• Clearing timers or intervals
• Releasing external references

Watch the full video tutorial here: Angular 17 ngOnDestroy Lifecycle Hook Tutorial

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