# Nuxt

Nuxt is a free and open source JavaScript library based on Vue.js, Nitro, and Vite. Nuxt is inspired by Next.js, which is a similar framework based on React rather than Vue.
The main advantage of Nuxt over using Vue alone is its universal rendering system. The framework works as both an in-browser single page application (SPA) as well as a server-rendered static website, by "hydrating" a server-rendered page to a full SPA after it's loaded. This allows websites to have the SEO and performance benefits of a server-rendered site in addition to the interactivity of a client-rendered application. Nuxt largely abstracts the server-rendering features from the developer, and it's therefore able to have a similar development experience to a traditional SPA using Vue's single file component (SFC) system.
In addition to its flagship universal rendering mechanism, Nuxt also provides many other benefits and quality-of-life features, such as path-based routing, hot module replacement (HMR), TypeScript support out of the box, and middleware and server logic.

## Features
### Path-based routing

Rather than a regular Vue.js application, which ordinarily requires every route to be manually registered, Nuxt uses path-based routing to automatically register every route in an application.
Pages are declared in the pages/ folder, where the name of the page file becomes the name of the route. Dynamic parameters can be added using square brackets, and catch-all routes can be added using three dots and square brackets, much like JavaScript's array spread syntax.
* /pages/about.vue - Matches /about.
* /pages/user/[id].vue - Matches all routes directly under /user.
* /pages/posts/[...slug].vue - Matches all routes under /posts.
* /pages/admin/[[page]].vue - Matches /admin in addition to all routes directly under it.

### Automatic imports

Nuxt automatically imports most Vue composition API functions, and any helper functions from the composables/ and utils/ folders.

### Layouts

Nuxt supports SSR-friendly layouts out of the box, which allows similar pages to use the same basic templates, such as a header and footer. Layouts are declared in the layouts/ folder, and work using native Vue slots.
To enable layouts in a Nuxt project, the entry point of the application, app.vue, must include a NuxtLayout component to toggle between layouts for each page.
The default layout is located at layouts/default.vue, and must include a slot for the page content.
A page can use a custom layout by using the definePageMeta helper in a setup function or block.

### Middleware

Nuxt adds middleware support to applications, which enables server logic to run between navigation changes. Both global and page-specific middleware files are supported.
Middleware is declared in the middleware/ folder, which exports a function that takes in the current and previous routes as parameters. From there, globally-available helpers like abortNavigation and navigateTo can be used to control navigation.

### Server API

Nuxt can also generate server API routes and handlers, using the server/ folder. Any file placed in server/api will become an API route, and any file placed in server/routes will become a route file, the difference being the final file location (server/api adds an api prefix to the path).
This can now be called from components using the useFetch composable.