#46 - Composition API Basics - Vue 3 Tutorial

In this Vue 3 tutorial, we learn a different way to write component logic with the Composition API. We cover how to move to the new setup option and how to replace options from the Options API with their new function counterparts.

We cover the following topics:
1. What is the Composition API
2. The setup method
3. Replacing the data option
4. Replacing the methods option
5. Replacing the computed option
6. Input binding (Two-way databinding)
7. Replacing the watch option
8. Handling props
9. Handling custom events
10. Replacing provide and inject
11. Replacing lifecycle hooks

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[mohamedahmed-ukzs]

i can't understand what does mean reactive i thought that if i change the variable value in setup it changes automatically in the template without using ref and reactive can you explain to me please ?