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49 lines
1.4 KiB
Markdown
49 lines
1.4 KiB
Markdown
---
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title: "useResponseHeader"
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description: "Use useResponseHeader to set a server response header."
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links:
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- label: Source
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icon: i-simple-icons-github
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to: https://github.com/nuxt/nuxt/blob/main/packages/nuxt/src/app/composables/ssr.ts
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size: xs
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---
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::important
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This composable is available in Nuxt v3.14+.
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::
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You can use the built-in [`useResponseHeader`](/docs/api/composables/use-response-header) composable to set any server response header within your pages, components, and plugins.
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```ts
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// Set the a custom response header
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const header = useResponseHeader('X-My-Header');
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header.value = 'my-value';
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```
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## Example
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We can use `useResponseHeader` to easily set a response header on a per-page basis.
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```vue [pages/test.vue]
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<script setup>
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// pages/test.vue
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const header = useResponseHeader('X-My-Header');
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header.value = 'my-value';
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</script>
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<template>
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<h1>Test page with custom header</h1>
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<p>The response from the server for this "/test" page will have a custom "X-My-Header" header.</p>
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</template>
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```
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We can use `useResponseHeader` for example in Nuxt [middleware](/docs/guide/directory-structure/middleware) to set a response header for all pages.
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```ts [middleware/my-header-middleware.ts]
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export default defineNuxtRouteMiddleware((to, from) => {
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const header = useResponseHeader('X-My-Always-Header');
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header.value = `I'm Always here!`;
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});
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```
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