Summary  
This chapter covers how to define reusable components in separate files and compose them by importing and using them in other components.  

General domain of usage  
user interface development

In Vue, components are created as separate `.vue` files and then used inside other components.

Create a new component file inside the `components` folder.

```vue 

<template>
  <p>Hello from component</p>
</template>
```

To use this component, import it and add it to your template.

```vue 
<script setup>
import Message from "./components/Message.vue";
</script>

<template>
  <Message />
</template>
```

The imported component works like a custom HTML element.

You can create multiple components and combine them to build the full interface.

This approach helps organize your application into smaller, reusable parts.

Which step is required to use a custom component like `Greeting` in your `App.vue` file?

Build dynamic interfaces using Vue.js and modern JavaScript. Render data, handle user interactions, structure components, and manage state in a clear and scalable way.

Understand what Vue.js is and how it simplifies building interactive interfaces. Set up a Vue project using Vite and explore how files and components are organized.

Render dynamic data using template syntax and build reactive interfaces with Vue. Handle user events, apply conditions, and display lists based on data.

Break interfaces into reusable components and organize UI structure. Pass data between components and communicate using props and events.

Manage application state using reactive data structures. Derive values with computed properties and respond to changes using watchers.

Handle user input with two-way data binding and form events. Process and validate form data in a structured way.

Apply styles to components using CSS and scoped styles. Control appearance dynamically using class and style bindings.

Build a complete Vue application from scratch by combining components, state, and interactivity. Structure the UI, manage data, and refine the final result into a working app.

Creating and Using Components

Creating and Using Components