What are the key lifecycle hooks in Vue.js and how do they affect performance?

What are the key lifecycle hooks in Vue.js and how do they affect performance?

In Vue.js, the key lifecycle hooks include beforeCreate, created, beforeMount, mounted, beforeUpdate, updated, beforeDestroy, and destroyed. These hooks allow you to run code at specific stages of a component's lifecycle, which can help optimize performance.

Can you explain how the mounted hook can improve performance?

The mounted hook is called after the component is added to the DOM. You can use it to perform operations that require the DOM to be ready, such as fetching data or initializing third-party libraries, which can enhance user experience and performance.

What about the beforeDestroy hook?

The beforeDestroy hook is called right before a component is destroyed. It's a good place to clean up resources, such as removing event listeners or canceling API requests, which helps prevent memory leaks and improves overall performance.

Are there any best practices for using these hooks?

Yes, some best practices include minimizing the amount of work done in each hook, using asynchronous operations wisely, and cleaning up resources in the beforeDestroy hook to maintain optimal performance.