> For the complete documentation index, see [llms.txt](https://docs.mapbox.com/mapbox-search-js/ja/llms.txt)
# Add Address Autofill to an HTML form
This example implements [Address Autofill](https://docs.mapbox.com/mapbox-search-js/ja/api/web/autofill/) to automatically add suggestions to the address input of an existing HTML form. It uses the [`autofill`](https://docs.mapbox.com/mapbox-search-js/ja/api/web/autofill/#autofill) method of Address Autofill. For other ways to use Address Autofill, see [Using Address Autofill](https://docs.mapbox.com/mapbox-search-js/ja/guides/autofill/web/#using-address-autofill) from the Quick start guide.
Address Autofill works with [browser HTML autocomplete tags](https://web.dev/learn/forms/autofill/) and form inputs must have `autocomplete` attributes declared for Address Autofill to work.
**JavaScript**
```html
Add Address Autofill to an HTML form
```