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4.7 KiB
4.7 KiB
name, description
| name | description |
|---|---|
| rendering-modes | Universal rendering, client-side rendering, and hybrid rendering in Nuxt |
Rendering Modes
Nuxt supports multiple rendering modes: universal (SSR), client-side (CSR), and hybrid rendering.
Universal Rendering (Default)
Server renders HTML, then hydrates on client:
// nuxt.config.ts - this is the default
export default defineNuxtConfig({
ssr: true,
});
Benefits:
- Fast initial page load (HTML is ready)
- SEO-friendly (content is in HTML)
- Works without JavaScript initially
How it works:
- Server executes Vue code, generates HTML
- Browser displays HTML immediately
- JavaScript loads and hydrates the page
- Page becomes fully interactive
Client-Side Rendering
Render entirely in the browser:
// nuxt.config.ts
export default defineNuxtConfig({
ssr: false,
});
Benefits:
- Simpler development (no SSR constraints)
- Cheaper hosting (static files only)
- Works offline
Use cases:
- Admin dashboards
- SaaS applications
- Apps behind authentication
SPA Loading Template
Provide loading UI while app hydrates:
<!-- app/spa-loading-template.html -->
<div class="loading">
<div class="spinner"></div>
<p>Loading...</p>
</div>
<style>
.loading {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
height: 100vh;
}
.spinner {
width: 40px;
height: 40px;
border: 4px solid #f3f3f3;
border-top: 4px solid #00dc82;
border-radius: 50%;
animation: spin 1s linear infinite;
}
@keyframes spin {
to {
transform: rotate(360deg);
}
}
</style>
Hybrid Rendering
Mix rendering modes per route using route rules:
// nuxt.config.ts
export default defineNuxtConfig({
routeRules: {
// Static pages - prerendered at build
'/': { prerender: true },
'/about': { prerender: true },
// ISR - regenerate in background
'/blog/**': { isr: 3600 }, // Cache for 1 hour
'/products/**': { swr: true }, // Stale-while-revalidate
// Client-only rendering
'/admin/**': { ssr: false },
'/dashboard/**': { ssr: false },
// Server-rendered (default)
'/api/**': { cors: true },
},
});
Route Rules Reference
| Rule | Description |
|---|---|
prerender: true |
Pre-render at build time |
ssr: false |
Client-side only |
swr: number | true |
Stale-while-revalidate caching |
isr: number | true |
Incremental static regeneration |
cache: { maxAge: number } |
Cache with TTL |
redirect: string |
Redirect to another path |
cors: true |
Add CORS headers |
headers: object |
Custom response headers |
Inline Route Rules
Define per-page:
<script setup lang="ts">
defineRouteRules({
prerender: true,
});
</script>
Prerendering
Generate static HTML at build time:
// nuxt.config.ts
export default defineNuxtConfig({
// Prerender specific routes
routeRules: {
'/': { prerender: true },
'/about': { prerender: true },
'/posts/*': { prerender: true },
},
});
Or use nuxt generate:
nuxt generate
Programmatic Prerendering
// nuxt.config.ts
export default defineNuxtConfig({
hooks: {
'prerender:routes'({ routes }) {
// Add dynamic routes
const posts = await fetchPostSlugs();
for (const slug of posts) {
routes.add(`/posts/${slug}`);
}
},
},
});
Or in pages:
// server/api/posts.ts or a plugin
prerenderRoutes(['/posts/1', '/posts/2', '/posts/3']);
Edge-Side Rendering
Render at CDN edge servers:
// nuxt.config.ts
export default defineNuxtConfig({
nitro: {
preset: 'cloudflare-pages', // or 'vercel-edge', 'netlify-edge'
},
});
Supported platforms:
- Cloudflare Pages/Workers
- Vercel Edge Functions
- Netlify Edge Functions
Conditional Rendering
Use import.meta.server and import.meta.client:
<script setup>
if (import.meta.server) {
// Server-only code
console.log('Running on server');
}
if (import.meta.client) {
// Client-only code
console.log('Running in browser');
}
</script>
For components:
<template>
<ClientOnly>
<BrowserOnlyComponent />
<template #fallback>
<p>Loading...</p>
</template>
</ClientOnly>
</template>