`.
You can customize cookie behavior with script attributes:
```html
```
Verify the installation with these checks:
1. Open the browser console and type `window._refport`. If the script loaded, you should see the Refport object.
2. Visit your site with `?refp_id=test` in the URL and confirm the `refp_id` cookie is set.
If either check fails, make sure the script is added to the `` and any CDN/page cache has been cleared.
Supported script attributes:
| Attribute | Description |
| --------------------- | ----------------------------------------------------- |
| `data-query-param` | URL query parameter to capture |
| `data-query-params` | JSON array or comma-separated query parameters |
| `data-cookie-name` | Cookie name |
| `data-cookie-domain` | Cookie domain, such as `.example.com` |
| `data-cookie-path` | Cookie path |
| `data-max-age` | Cookie max age in seconds |
| `data-same-site` | Cookie SameSite value: `Strict`, `Lax`, or `None` |
| `data-secure` | Set to `true` or `false` to override the Secure flag |
| `data-clean-url` | Set to `false` to keep the query parameter in the URL |
| `data-cookie-options` | JSON object with cookie options like `expiresInDays` |
### CDN API
Use the IIFE bundle when you want to call the browser SDK manually:
```html
```
Or use the ES module bundle:
```html
```
## Embed Portal
```ts
import { createEmbed } from "refport-js";
const embed = createEmbed(document.getElementById("portal")!, {
token: "pub_...",
theme: "light",
cssVars: { "--accent": "#ff6600" },
onError: (err) => console.error(err.message),
});
embed.destroy();
```
### `createEmbed(target, options)`
Mounts a Refport referral portal iframe into the given DOM element. Returns a `RefportEmbedInstance` with:
- `container` — the wrapper `` element
- `iframe` — the `