mirror of https://github.com/nuxt/nuxt.git
99 lines
2.3 KiB
Markdown
99 lines
2.3 KiB
Markdown
---
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title: "Lifecycle Hooks"
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description: "Nuxt provides a powerful hooking system to expand almost every aspect using hooks."
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---
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::tip
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The hooking system is powered by [unjs/hookable](https://github.com/unjs/hookable).
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::
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## Nuxt Hooks (Build Time)
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These hooks are available for [Nuxt Modules](/docs/guide/going-further/modules) and build context.
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### Within `nuxt.config`
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```js [nuxt.config]
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export default defineNuxtConfig({
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hooks: {
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close: () => { }
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}
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})
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```
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### Within Nuxt Modules
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```js
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import { defineNuxtModule } from '@nuxt/kit'
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export default defineNuxtModule({
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setup (options, nuxt) {
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nuxt.hook('close', async () => { })
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}
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})
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```
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::read-more{to="/docs/api/advanced/hooks#nuxt-hooks-build-time"}
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Explore all available Nuxt hooks.
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::
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## App Hooks (Runtime)
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App hooks can be mainly used by [Nuxt Plugins](/docs/guide/directory-structure/plugins) to hook into rendering lifecycle but could also be used in Vue composables.
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```js [plugins/test.ts]
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export default defineNuxtPlugin((nuxtApp) => {
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nuxtApp.hook('page:start', () => {
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/* your code goes here */
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})
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})
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```
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::read-more{to="/docs/api/advanced/hooks#app-hooks-runtime"}
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Explore all available App hooks.
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::
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## Server Hooks (Runtime)
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These hooks are available for [server plugins](/docs/guide/directory-structure/server#server-plugins) to hook into Nitro's runtime behavior.
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```js [~/server/plugins/test.ts]
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export default defineNitroPlugin((nitroApp) => {
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nitroApp.hooks.hook('render:html', (html, { event }) => {
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console.log('render:html', html)
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html.bodyAppend.push('<hr>Appended by custom plugin')
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})
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nitroApp.hooks.hook('render:response', (response, { event }) => {
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console.log('render:response', response)
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})
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})
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```
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::read-more{to="/docs/api/advanced/hooks#nitro-app-hooks-runtime-server-side"}
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Learn more about available Nitro lifecycle hooks.
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::
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## Additional Hooks
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You can add additional hooks by augmenting the types provided by Nuxt. This can be useful for modules.
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```ts
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import { HookResult } from "@nuxt/schema";
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declare module '#app' {
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interface RuntimeNuxtHooks {
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'your-nuxt-runtime-hook': () => HookResult
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}
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interface NuxtHooks {
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'your-nuxt-hook': () => HookResult
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}
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}
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declare module 'nitropack' {
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interface NitroRuntimeHooks {
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'your-nitro-hook': () => void;
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}
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}
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```
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