What are some advanced techniques for using the options API in Vue.js?

What are some advanced techniques for using the options API in Vue.js?

Some advanced techniques include using mixins for code reuse, leveraging computed properties for performance, and utilizing watchers for deep data observation.

Can you explain how mixins work in the options API?

Mixins allow you to define reusable functionalities that can be shared across multiple components. You can create a mixin with data, methods, and lifecycle hooks, and then include it in your component.

What are computed properties and how do they improve performance?

Computed properties are cached based on their dependencies. They only re-evaluate when their dependencies change, which can significantly improve performance compared to methods that run every time the component re-renders.

How do watchers work in Vue.js?

Watchers allow you to perform asynchronous or expensive operations in response to changing data. You can watch a specific data property and execute a function whenever that property changes.

Can you give an example of using a watcher for deep observation?

Sure! You can set a watcher with the deep: true option to observe nested properties in an object. For example, if you have a user object, you can watch for changes in any of its nested properties.