How can I manage state in Vue using the Composition API?

How can I manage state in Vue using the Composition API?

You can manage state in Vue using the Composition API by creating reactive variables with ref or reactive. This allows you to encapsulate state logic in a function.

Can you show me a simple example of using ref for state management?

Sure! Here's a simple example:

import { ref } from 'vue';

export default {
  setup() {
    const count = ref(0);

    function increment() {
      count.value++;
    }

    return { count, increment };
  }
};

This creates a reactive count variable that you can increment.

What about using reactive instead of ref?

Using reactive, you can manage an object state. Here's an example:

import { reactive } from 'vue';

export default {
  setup() {
    const state = reactive({ count: 0 });

    function increment() {
      state.count++;
    }

    return { state, increment };
  }
};

This allows you to manage multiple properties in a single reactive object.

Are there any best practices for state management with the Composition API?

Yes, some best practices include:

1. Keep your state management logic modular by using composables.
2. Use provide and inject for sharing state across components.
3. Avoid deep nesting in reactive objects to maintain performance.