Aww yeah, Material-UI v4 is here!


The API documentation of the Fab React component. Learn more about the properties and the CSS customization points.

import Fab from '@material-ui/core/Fab';


Name Type Default Description
childrenĀ * node The content of the button.
classes object Override or extend the styles applied to the component. See CSS API below for more details.
color enum: 'default' |
 'inherit' |
 'primary' |
'default' The color of the component. It supports those theme colors that make sense for this component.
component Component 'button' The component used for the root node. Either a string to use a DOM element or a component.
disabled bool false If true, the button will be disabled.
disableFocusRipple bool false If true, the keyboard focus ripple will be disabled. disableRipple must also be true.
disableRipple bool If true, the ripple effect will be disabled.
href string The URL to link to when the button is clicked. If defined, an a element will be used as the root node.
size enum: 'small' |
 'medium' |
'large' The size of the button. small is equivalent to the dense button styling.
variant enum: 'round' |
'round' The variant to use.

Any other properties supplied will be spread to the root element (ButtonBase).


You can override all the class names injected by Material-UI thanks to the classes property. This property accepts the following keys:

Name Description
root Styles applied to the root element.
label Styles applied to the span element that wraps the children.
primary Styles applied to the root element if color="primary".
secondary Styles applied to the root element if color="secondary".
extended Styles applied to the root element if variant="extended".
focusVisible Styles applied to the ButtonBase root element if the button is keyboard focused.
disabled Styles applied to the root element if disabled={true}.
colorInherit Styles applied to the root element if color="inherit".
sizeSmall Styles applied to the root element if `size="small"``.
sizeMedium Styles applied to the root element if `size="medium"``.

Have a look at overriding with classes section and the implementation of the component for more detail.

If using the overrides key of the theme, you need to use the following style sheet name: MuiFab.


The properties of the ButtonBase component are also available. You can take advantage of this behavior to target nested components.