Nuxt/docs/3.api/2.composables/use-id.md

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---
title: "useId"
description: Generate an SSR-friendly unique identifier that can be passed to accessibility attributes.
---
::important
This composable is available since [Nuxt v3.10](/blog/v3-10#ssr-safe-accessible-unique-id-creation).
::
`useId` generates an SSR-friendly unique identifier that can be passed to accessibility attributes.
Call `useId` at the top level of your component to generate a unique string identifier:
```vue [components/EmailField.vue]
<script setup lang="ts">
const id = useId()
</script>
<template>
<div>
<label :for="id">Email</label>
<input :id="id" name="email" type="email" />
</div>
</template>
```
::note
`useId` must be used in a component with a single root element, as it uses this root element's attributes to pass the id from server to client.
::
## Parameters
`useId` does not take any parameters.
## Returns
`useId` returns a unique string associated with this particular `useId` call in this particular component.