> ## Documentation Index
> Fetch the complete documentation index at: https://developer.tazapay.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Focus Event

> The focus event is triggered when the embed gains focus. This can happen when a user clicks on an input element, or uses the keyboard (like the Tab key) to navigate to it.

## Method Parameters

1. `event` - mandatory\
   The name of the event, in this case `focus`
2. `handler` - mandatory\
   handler(event) => void is a callback function that a merchant will provide that will be called when the event is fired. When called it will be passed an event object with the following properties:

   | Field     | Sub-field | Type   | Description                                                    |
   | :-------- | :-------- | :----- | :------------------------------------------------------------- |
   | embedType |           | string | The type of embed that emitted this event. In this case `card` |

## Handling an embed focus event

```javascript Javascript theme={null}
cardEmbed.on('focus', function(event) {
  // Handle focus event
});
```