What are the different lifecycle hooks in Vue.js?

What are the different 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 are:

1. beforeCreate - Called before the instance is created.
2. created - Called after the instance is created.
3. beforeMount - Called before the component is mounted.
4. mounted - Called after the component is mounted.
5. beforeUpdate - Called before the component is updated.
6. updated - Called after the component is updated.
7. beforeDestroy - Called before the component is destroyed.
8. destroyed - Called after the component is destroyed.

Can you explain the mounted hook?

The mounted hook is called after the component has been mounted to the DOM. This is a great place to perform actions that require the component to be in the DOM, such as fetching data or manipulating the DOM directly.

What about the beforeDestroy hook?

The beforeDestroy hook is called right before a component is destroyed. This is where you can perform cleanup tasks, such as invalidating timers, unsubscribing from events, or clearing any data that should not persist after the component is removed.

Are there any hooks that are specific to Vue 3?

Yes, Vue 3 introduced the Composition API, which includes new lifecycle hooks like onBeforeMount, onMounted, onBeforeUpdate, and onBeforeUnmount. These hooks can be used within the setup function to manage component lifecycle in a more flexible way.