What are the differences between Vue.js lifecycle hooks?

What are the differences between the lifecycle hooks in Vue.js?

In Vue.js, lifecycle hooks are methods that allow you to run code at specific stages of a component's lifecycle. The main hooks include created, mounted, updated, and destroyed. Each serves a different purpose, such as initializing data, accessing the DOM, responding to data changes, or cleaning up resources.

Can you explain when to use each of these hooks?

Sure! Use created for data fetching or setting up state before the component is rendered. mounted is ideal for DOM manipulations or third-party library integrations. updated is useful for responding to data changes, and destroyed is where you can clean up any resources or event listeners.

What happens if I don't use these hooks properly?

If lifecycle hooks are not used properly, it can lead to performance issues, memory leaks, or unexpected behavior in your application. For example, not cleaning up event listeners in destroyed can cause memory leaks.

Are there any best practices for using lifecycle hooks?

Yes! Some best practices include keeping your hooks concise, avoiding heavy computations in created or mounted, and ensuring that you clean up resources in destroyed. Also, consider using Vue's composition API for better organization of your code.