# on-focus parameter (skin)

Source: https://ref.dm-lang.org/skin/param/on-focus

### Applies to
> [Input](https://ref.dm-lang.org/skin/control/input.md)

### Format
> `string`

[Command](https://ref.dm-lang.org/skin/commands/index.md) executed when the control gains focus.

### See also
- [focus parameter](https://ref.dm-lang.org/skin/param/focus.md)
- [on-blur parameter](https://ref.dm-lang.org/skin/param/on-blur.md)