What are the basics of using the setup script in Vue 3?

What are the basics of using the setup script in Vue 3?

The setup script in Vue 3 is a new way to organize your component logic. It allows you to use Composition API features like reactive state and lifecycle hooks in a more organized manner.

How do I define reactive variables in the setup script?

You can define reactive variables using the ref or reactive functions. For example, const count = ref(0); creates a reactive variable.

Can I use computed properties in the setup script?

Yes, you can use computed properties by importing computed from Vue. For example, const doubleCount = computed(() => count.value * 2);.

What about lifecycle hooks?

You can use lifecycle hooks like onMounted and onUnmounted directly in the setup function to manage component lifecycle events.