# Floating Action Button

- Page: https://jiguang132.com/resources/material-ui/docs/floating-action-button
- Resource: Material UI (https://jiguang132.com/resources/material-ui.md)
- All guides: https://jiguang132.com/resources/material-ui/docs.md

Emphasize one primary action with a native floating action Button.

This guide covers Material UI Core with the default Emotion engine; extensions and additional demos are explicitly classified.

## Use case and business boundary

Placement and the business action belong to the host; label icon-only FABs and respect motion preferences.

## Native composition and scope

`Fab`

Preserve native Material UI composition and types; do not substitute JGuang UI/Base UI/Radix APIs. Example entries are not extra components.

## Native installation and initialization

```bash
npm install @mui/material@9.4.0 @emotion/react@11.14.0 @emotion/styled@11.14.1
```

Use native npm and Emotion, not an invented JGuang UI Registry URL. Place examples inside native ThemeProvider; choose CssBaseline or ScopedCssBaseline for the project. Inspect React, existing providers, lockfile and SSR first. Never overwrite files or conceal peer conflicts. This batch verified React 19.2.8; React 18 and below require matching react-is. See the included bilingual setup guide.

## Practical native parameters

These selected parameters are not a flattened universal API. Preserve the native declaring owner, slot structure, nullable values and generics.

| Owner.prop | Practical role | Declaration source |
| --- | --- | --- |
| `Fab.variant` | Owning native presentation enum; never substitute a universal variant prop. | `Fab` |
| `Fab.size` | Owning native size: enum for controls, responsive column span for Grid. | `Fab` |
| `Fab.color` | Owning component's native semantic/custom color, not another system's palette enum. | `Fab` |

## Runnable native examples

Machine keys select example entries, not universal variant props. Native demo JSX/data stay unchanged; JGuang-authored acceptance fixtures are explicitly labelled.

- Basic FAB · `FloatingActionButtons` · upstream native demo
- Size · `FloatingActionButtonSize` · upstream native demo
- Size · `FloatingActionButtonExtendedSize` · upstream native demo
- Animation · `FloatingActionButtonZoom` · upstream native demo

## Actual usage example

Unmodified pinned native demo; copy its required local helper files together.

```tsx
import Box from '@mui/material/Box';
import Fab from '@mui/material/Fab';
import AddIcon from '@mui/icons-material/Add';
import EditIcon from '@mui/icons-material/Edit';
import FavoriteIcon from '@mui/icons-material/Favorite';
import NavigationIcon from '@mui/icons-material/Navigation';

export default function FloatingActionButtons() {
  return (
    <Box sx={{ '& > :not(style)': { m: 1 } }}>
      <Fab color="primary" aria-label="add">
        <AddIcon />
      </Fab>
      <Fab color="secondary" aria-label="edit">
        <EditIcon />
      </Fab>
      <Fab variant="extended">
        <NavigationIcon sx={{ mr: 1 }} />
        Navigate
      </Fab>
      <Fab disabled aria-label="like">
        <FavoriteIcon />
      </Fab>
    </Box>
  );
}

```

## Example dependency boundaries

`@mui/material/Box`, `@mui/material/Fab`, `@mui/icons-material/Add`, `@mui/icons-material/Edit`, `@mui/icons-material/Favorite`, `@mui/icons-material/Navigation`, `react`, `@mui/material/styles`, `@mui/material/AppBar`, `@mui/material/Tabs`, `@mui/material/Tab`, `@mui/material/Typography`, `@mui/material/Zoom`, `@mui/icons-material/KeyboardArrowUp`, `@mui/material/colors`, `@mui/system`

Direct Icons/System/Utils example imports require their matching 9.4.0 packages. Relative data/helpers are part of the example closure, not extra components. Remote images and simulated operations do not supply a backend.

## Pinned upstream API metadata reference

These tables retain the upstream metadata, not a newly inferred generic type system. Conditional generics, inherited props and callback details are defined by the source declarations below. Theme defaults may override metadata defaults.

### Fab

```tsx
import Fab from '@mui/material/Fab';
import { Fab } from '@mui/material';
```

Native inheritance: `ButtonBase`. Parent/DOM props are not fabricated as additional own props.

| Prop | Required | Upstream metadata type / constraint | Metadata default |
| --- | --- | --- | --- |
| `children` | no | `node` | — |
| `classes` | no | `object` | — |
| `color` | no | `'default' \| 'error' \| 'info' \| 'inherit' \| 'primary' \| 'secondary' \| 'success' \| 'warning' \| string` | `'default'` |
| `component` | no | `elementType` | — |
| `disabled` | no | `bool` | `false` |
| `disableFocusRipple` | no | `bool` | `false` |
| `disableRipple` | no | `bool` | — |
| `href` | no | `string` | — |
| `size` | no | `'small' \| 'medium' \| 'large' \| string` | `'large'` |
| `sx` | no | `Array<func \| object \| bool> \| func \| object` | — |
| `variant` | no | `'circular' \| 'extended' \| string` | `'circular'` |


## Native source declarations

Declarations/imports are extracted from pinned source without flattening unions or external inheritance. Original English comments/types are source reference, not a claim of translated upstream prose. Shared types stay in their native packages.

### vendor/src/Fab/Fab.d.ts

```ts
import * as React from 'react';

import { OverridableStringUnion } from '@mui/types';

import { SxProps } from '@mui/system';

import { PropTypes, Theme } from '../styles';

import { ExtendButtonBase, ExtendButtonBaseTypeMap } from '../ButtonBase';

import { OverrideProps } from '../OverridableComponent';

import { FabClasses } from './fabClasses';

export interface FabPropsVariantOverrides {}

export interface FabPropsSizeOverrides {}

export interface FabPropsColorOverrides {}

export interface FabOwnProps {
  /**
   * The content of the component.
   */
  children?: React.ReactNode;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<FabClasses> | undefined;
  /**
   * The color of the component.
   * It supports both default and custom theme colors, which can be added as shown in the
   * [palette customization guide](https://mui.com/material-ui/customization/palette/#custom-colors).
   * @default 'default'
   */
  color?:
    | OverridableStringUnion<
        PropTypes.Color | 'success' | 'error' | 'info' | 'warning',
        FabPropsColorOverrides
      >
    | undefined;
  /**
   * If `true`, the component is disabled.
   * @default false
   */
  disabled?: boolean | undefined;
  /**
   * If `true`, the  keyboard focus ripple is disabled.
   * @default false
   */
  disableFocusRipple?: boolean | undefined;
  /**
   * If `true`, the ripple effect is disabled.
   */
  disableRipple?: boolean | undefined;
  /**
   * The URL to link to when the button is clicked.
   * If defined, an `a` element will be used as the root node.
   */
  href?: string | undefined;
  /**
   * The size of the component.
   * `small` is equivalent to the dense button styling.
   * @default 'large'
   */
  size?: OverridableStringUnion<'small' | 'medium' | 'large', FabPropsSizeOverrides> | undefined;
  /**
   * The variant to use.
   * @default 'circular'
   */
  variant?: OverridableStringUnion<'circular' | 'extended', FabPropsVariantOverrides> | undefined;
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
}

export type FabTypeMap<
  AdditionalProps = {},
  RootComponent extends React.ElementType = 'button',
> = ExtendButtonBaseTypeMap<{
  props: AdditionalProps & FabOwnProps;
  defaultComponent: RootComponent;
}>;

declare const Fab: ExtendButtonBase<FabTypeMap>;

export type FabProps<
  RootComponent extends React.ElementType = FabTypeMap['defaultComponent'],
  AdditionalProps = {},
> = OverrideProps<FabTypeMap<AdditionalProps, RootComponent>, RootComponent> & {
  component?: React.ElementType | undefined;
};
```

## Post-install acceptance

Run strict types, production build and real interactions. Check keyboard labels/focus, disabled/error/read-only semantics where natively supported, both themes, narrow screens and reduced motion. Verify callbacks against the real host data; do not declare installation complete from copying a prompt. Initialization fixtures also require server HTML and warning-free hydration.

## Source and license

https://github.com/mui/material-ui/tree/809a7717b4c050ba3f69b75300689f07c050a16e

MIT · @mui/material@9.4.0. Vendor originals and license are preserved. Full original upstream prose remains in vendor/docs and is not represented as fully translated.

---

Index of all JGuang resources: https://jiguang132.com/llms.txt