# \<Slot>

Learn how to render the content of a slot using components.

This component fetches and renders the content of a [Slot](/explanation/slot) with full server-side rendering support, serving as the declarative equivalent of the [`useContent`](/reference/sdk/nuxt/api/composables/use-content) composable.

## Example

Here is a basic example of how to use this component:

**JavaScript**

```vue
<template>
  <Slot id="home-hero" v-slot="{ content }">
    <div>
      <strong>{{ content.title }}</strong>
      <p>{{ content.subtitle }}</p>
      <a :href="content.button.link">{{ content.button.label }}</a>
    </div>
  </Slot>
</template>
```

**TypeScript**

```vue
<template>
  <Slot id="home-hero" v-slot="{ content }">
    <div>
      <strong>{{ content.title }}</strong>
      <p>{{ content.subtitle }}</p>
      <a :href="content.button.link">{{ content.button.label }}</a>
    </div>
  </Slot>
</template>
```

### Loading and error states

You can use named slots to handle loading and error states:

**JavaScript**

```vue
<template>
  <Slot id="home-hero">
    <template #default="{ content }">
      <div>
        <strong>{{ content.title }}</strong>
        <p>{{ content.subtitle }}</p>
        <a :href="content.button.link">{{ content.button.label }}</a>
      </div>
    </template>

    <template #loading>
      <p>Loading...</p>
    </template>

    <template #error="{ error }">
      <p>Something went wrong: {{ error.message }}</p>
    </template>
  </Slot>
</template>
```

**TypeScript**

```vue
<template>
  <Slot id="home-hero">
    <template #default="{ content }">
      <div>
        <strong>{{ content.title }}</strong>
        <p>{{ content.subtitle }}</p>
        <a :href="content.button.link">{{ content.button.label }}</a>
      </div>
    </template>

    <template #loading>
      <p>Loading...</p>
    </template>

    <template #error="{ error }">
      <p>Something went wrong: {{ error.message }}</p>
    </template>
  </Slot>
</template>
```

## Props

The following list describes the supported props:

- `id`: `string`

  The ID of the slot to fetch, optionally followed by a version number. For example, `home-hero@2`.

- `fallback`: `JSON` (optional)

  A fallback value to render in case of an error.

  > **Auto-provided**
  >
  > If you are using the Croct CLI, you do not need to set a fallback unless you want to use a different one.

  If not specified, the `#error` slot renders on failure.

- `preferredLocale`: `string` (optional) (default: default locale)

  The locale code to fetch the content.

  The code consists of a two-part string that specifies the language and, optionally, the country. For example, `en` represents English, `en-us` stands for English (United States), and `pt-br` for Portuguese (Brazil). It is case-insensitive and supports both hyphens and underscores as separators to accommodate the different conventions used by browsers, libraries, and other systems.

  If no content is available in the preferred locale, the default locale content is returned instead.

- `timeout`: `number` (optional)

  The maximum fetch time in milliseconds.

  Once reached, the SDK will abort the request and reject the promise with a timeout error.

- `attributes`: `object` (optional)

  The map of attributes to inject in the evaluation context.

  The attributes can be referenced in audience conditions using the [`context`](/reference/cql/context#evaluation) variable. For example, suppose you pass the following attributes:

  ```json
  {cities: ["New York", "San Francisco"]}
  ```

  You can then reference them in queries like:

  ```cql
  context's cities include location's cityName
  ```

  For more information, see [Context variables](../../content-rendering#context-variables).

  The following restrictions apply to the attributes:

  - Up to 30 entries and 5 levels deep
  - Keys can be either numbers or non-empty strings with a maximum length of 50 characters
  - Values can be null, numbers, booleans, strings (up to 50 characters), or nested maps
  - Nested maps follow the same constraints for keys and values

## Slots

The following list describes the supported slots:

- `#default`: `object`

  Renders when the content has been fetched successfully.

  The scope exposes `content` with the slot content, and an optional `metadata` object.

- `#loading`: `object`

  Renders while the content is being fetched.

- `#error`: `object`

  Renders when fetching fails. Not used when a `fallback` prop is provided.

  The scope exposes `error` with the error details.