> For the complete documentation index, see [llms.txt](https://docs.edgetag.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.edgetag.io/implementation/headless/user-info/data.md).

# Data

**When should I use this function?**\
When you want to send multiple keys and custom keys in addition to the [standard keys](/implementation/browser/user-info/standard-keys.md).

### Parameters

| Name      | Type                                        | Required | Description                                                                                 |
| --------- | ------------------------------------------- | -------- | ------------------------------------------------------------------------------------------- |
| data      | Record\<string, string>                     | Yes      | Data that you would like to persist on the edge.                                            |
| providers | Record\<string, boolean>                    | No       | Define for which providers you would like to send data. By default, we send to all of them. |
| option    | { method?: 'beacon', destination?: string } | No       | See below                                                                                   |

#### Options

**Method**: If you provide the method with a value `beacon`, we will send this event through a [beacon](https://developer.mozilla.org/en-US/docs/Web/API/Beacon_API) delivery mechanism instead of a regular fetch.

**Destination**: We recommend specifying the destination, especially if multiple EdgeTag instances exist on the website. If you do not, we will trigger the same event to multiple destinations. The destination value should be the EdgeTag URL.

### Examples

{% code title="Multiple standard keys" %}

```javascript
import { data } from '@blotoutio/edgetag-sdk-js'

data({
  email: 'john@site.com',
  phone: '+14154552670',
  city: 'fremont'
})

```

{% endcode %}

<pre class="language-javascript" data-title="Multiple custom keys"><code class="lang-javascript"><strong>import { data } from '@blotoutio/edgetag-sdk-js'
</strong><strong>
</strong><strong>data({
</strong>  member: true,
  step: 10
})
</code></pre>

{% code title="Mixture of standard and custom keys" %}

```javascript
import { data } from '@blotoutio/edgetag-sdk-js'

data({
  email: 'john@site.com'
  step: 10
})
```

{% endcode %}


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