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49 lines
1.3 KiB
Markdown
49 lines
1.3 KiB
Markdown
---
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description: The recommended way to provide head data with user input.
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---
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# `useHeadSafe`
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The `useHeadSafe` composable is a wrapper around the [`useHead`](/docs/api/composables/use-head) composable that restricts the input to only allow safe values.
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## Usage
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You can pass all the same values as [`useHead`](/docs/api/composables/use-head)
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```ts
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useHeadSafe({
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script: [
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{ id: 'xss-script', innerHTML: 'alert("xss")' }
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],
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meta: [
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{ 'http-equiv': 'refresh', content: '0;javascript:alert(1)' }
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]
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})
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// Will safely generate
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// <script id="xss-script"></script>
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// <meta content="0;javascript:alert(1)">
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```
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Read more on [unhead documentation](https://unhead.unjs.io/usage/composables/use-head-safe).
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## Type
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```ts
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useHeadSafe(input: MaybeComputedRef<HeadSafe>): void
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```
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The whitelist of safe values is:
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```ts
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export default {
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htmlAttrs: ['id', 'class', 'lang', 'dir'],
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bodyAttrs: ['id', 'class'],
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meta: ['id', 'name', 'property', 'charset', 'content'],
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noscript: ['id', 'textContent'],
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script: ['id', 'type', 'textContent'],
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link: ['id', 'color', 'crossorigin', 'fetchpriority', 'href', 'hreflang', 'imagesrcset', 'imagesizes', 'integrity', 'media', 'referrerpolicy', 'rel', 'sizes', 'type'],
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}
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```
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See [@unhead/schema](https://github.com/unjs/unhead/blob/main/packages/schema/src/safeSchema.ts) for more detailed types.
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