What's the difference between Vue 3 Setup and Options API?

What's the difference between Vue 3 Setup and Options API?

The Setup API is a new way to organize your component logic in Vue 3, allowing for better code organization and reusability. The Options API, on the other hand, is the traditional way of defining components using options like data, methods, and lifecycle hooks.

Can you give me an example of how to use the Setup API?

Sure! In the Setup function, you can define reactive state using ref or reactive, and return the properties and methods you want to expose to the template. Here's a simple example:

import { ref } from 'vue';

export default {
  setup() {
    const count = ref(0);
    const increment = () => count.value++;
    return { count, increment };
  }
};

What are the benefits of using the Setup API?

The Setup API provides better TypeScript support, improved code organization, and allows for easier composition of logic across components. It also makes it simpler to manage reactive state.

Is it possible to mix both APIs in a single component?

Yes, you can mix both APIs in a single component. You can use the Options API for some parts of your component while utilizing the Setup API for others, allowing for a gradual transition.