# buttonIcons

> FullCalendar v1 documentation, for an old release. Web version: https://legacy.fullcalendar.io/v1/buttonIcons
>
> Latest version (v7): https://fullcalendar.io/docs/buttons.md

Determines which theme icons appear on the header buttons.

<div class='spec' markdown='1'>
Object, *default:*

```js
{
  prev: 'circle-triangle-w',
  next: 'circle-triangle-e'
}
```
</div>

This option only applies to calendars that have jQuery UI theming enabled with the [theme](https://legacy.fullcalendar.io/v1/theme.md) option.

A hash must be supplied that maps button names (from the [header](https://legacy.fullcalendar.io/v1/header.md)) to icon strings. The icon strings determine the CSS class that will be used on the button. For example, the string `'circle-triangle-w'` will result in the class `'ui-icon-triangle-w'`.

If a button does not have an entry, it falls back to using [buttonText](https://legacy.fullcalendar.io/v1/buttonText.md).

If you are using a jQuery UI theme and would prefer not to display any icons and would rather use `buttonText` instead, you can set the `buttonIcons` option to `false`.