# Javascript CDN
{% hint style="warning" %}
The documentation is designed for Liker Land and LikeCoin v2. For information on [3ook.com](https://3ook.com/) and LikeCoin v3, please visit [docs.3ook.com](https://docs.3ook.com) and [dao.like.co](https://dao.like.co/).
{% endhint %}
## Usage
1. Add the following `div` tag into the webpage at the position for embedding LikeCoin button:
``
| Param | Description |
| ----------------- | ---------------------------------------------- |
| data-iscn-id | Content's ISCN ID, overrides href and Liker ID |
| `data-liker-id` | Creator's Liker ID |
| `data-liker-href` | Current content's canonical URL |
Here, `data-liker-id` is required and refers to your Liker ID, where `data-href` is optional and refers to your page's canonical URL. If omitted, the SDK will use the current URL of the browser. It is suggested to always include a `data-href`
2\. Add the following `script` tag at the end of the `body` tag:
``
### Sample HTML
{% code title="index.html" %}
```bash
LikeCoin button SDK demo
```
{% endcode %}
### Source Repository
---
# Agent Instructions: 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://docs.v2.like.co/developer/likecoin-button/html.md?ask=
```
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.