form-helper-text

Import

import FormHelperText from '@mui/material/FormHelperText';
// or
import { FormHelperText } from '@mui/material';

Learn about the difference by reading this guide on minimizing bundle size.

Props of the native component are also available.

Name	Type	Description
children	node	The content of the component. If ' ' is provided, the component reserves one line height for displaying a future message.
classes	object	Override or extend the styles applied to the component. See CSS classes API below for more details.
component	elementType	The component used for the root node. Either a string to use a HTML element or a component.
disabled	bool	If true, the helper text should be displayed in a disabled state.
error	bool	If true, helper text should be displayed in an error state.
filled	bool	If true, the helper text should use filled classes key.
focused	bool	If true, the helper text should use focused classes key.
margin	‘dense’	If dense, will adjust vertical spacing. This is normally obtained via context from FormControl.
required	bool	If true, the helper text should use required classes key.
sx	Array<func | object | bool> | func | object	The system prop that allows defining system overrides as well as additional CSS styles. See the sx page for more details.
variant	‘filled’ | ‘outlined’ | ‘standard’ | string	The variant to use.

The ref is forwarded to the root element.

Theme default props

You can use MuiFormHelperText to change the default props of this component with the theme.

These class names are useful for styling with CSS. They are applied to the component’s slots when specific states are triggered.

Class name	Rule name	Description
.Mui-disabled		State class applied to the root element if disabled={true}.
.Mui-error		State class applied to the root element if error={true}.
.Mui-focused		State class applied to the root element if focused={true}.
.Mui-required		State class applied to the root element if required={true}.
.MuiFormHelperText-contained	contained	Styles applied to the root element if variant="filled" or variant="outlined".
.MuiFormHelperText-filled	filled	State class applied to the root element if filled={true}.
.MuiFormHelperText-root	root	Styles applied to the root element.
.MuiFormHelperText-sizeSmall	sizeSmall	Styles applied to the root element if size="small".

You can override the style of the component using one of these customization options:

• With a global class name.
• With a rule name as part of the component’s styleOverrides property in a custom theme.

Source code

If you did not find the information in this page, consider having a look at the implementation of the component for more detail.