> For the complete documentation index, see [llms.txt](https://webauthn-doc.spomky-labs.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://webauthn-doc.spomky-labs.com/v4.5/prerequisites/javascript.md).

# Javascript

You will interact with the authenticators through an HTML page and Javascript using the Webauthn API.

We highly recommend the use of [@simplewebauthn/browser](https://simplewebauthn.dev/docs/packages/browser/). This library provides lots of easy and useful features and it fully compliant with the specification.

{% hint style="danger" %}
Note that is mandatory to use the HTTPS scheme to use Webauthn otherwise it will not work.
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://webauthn-doc.spomky-labs.com/v4.5/prerequisites/javascript.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.