Select API

想要学习更多组件属性和 CSS API，可以查阅 React Select 组件的 API 文档。

导入

import Select from '@mui/material/Select';
// 或
import { Select } from '@mui/material';

你可以阅读这个关于最小化捆绑包的指南以了解以上二者的差异。

组件名称

在主题中，名称“MuiSelect”可用于提供默认属性（props），或者样式覆盖

属性

OutlinedInput 组件的属性也是可用的。

名称	类型	默认值	描述
autoWidth	bool	false	If `true`, the width of the popover will automatically be set according to the items inside the menu, otherwise it will be at least the width of the select input.
children	node		The option elements to populate the select with. Can be some `MenuItem` when `native` is false and `option` when `native` is true. ⚠️The `MenuItem` elements must be direct descendants when `native` is false.
classes	object	{}	Override or extend the styles applied to the component. See CSS API below for more details.
defaultOpen	bool	false	If `true`, the component is initially open. Use when the component open state is not controlled (i.e. the `open` prop is not defined). You can only use it when the `native` prop is `false` (default).
defaultValue	any		The default input value. Use when the component is not controlled.
displayEmpty	bool	false	If `true`, a value is displayed even if no items are selected. In order to display a meaningful value, a function can be passed to the `renderValue` prop which returns the value to be displayed when no items are selected. ⚠️ When using this prop, make sure the label doesn't overlap with the empty displayed value. The label should either be hidden or forced to a shrunk state.
IconComponent	elementType	ArrowDropDownIcon	The icon that displays the arrow.
id	string		The `id` of the wrapper element or the `select` element when `native`.
input	element		An `Input` element; does not have to be a material-ui specific `Input`.
inputProps	object		Attributes applied to the `input` element. When `native` is `true`, the attributes are applied on the `select` element.
label	node		See OutlinedInput#label
labelId	string		The ID of an element that acts as an additional label. The Select will be labelled by the additional label and the selected value.
MenuProps	object		Props applied to the `Menu` element.
multiple	bool	false	If `true`, `value` must be an array and the menu will support multiple selections.
native	bool	false	If `true`, the component uses a native `select` element.
onChange	func		Callback fired when a menu item is selected. Signature: `function(event: object, child?: object) => void` event: The event source of the callback. You can pull out the new value by accessing `event.target.value` (any). Warning: This is a generic event not a change event. child: The react element that was selected when `native` is `false` (default).
onClose	func		Callback fired when the component requests to be closed. Use in controlled mode (see open). Signature: `function(event: object) => void` event: The event source of the callback.
onOpen	func		Callback fired when the component requests to be opened. Use in controlled mode (see open). Signature: `function(event: object) => void` event: The event source of the callback.
open	bool	false	Control `select` open state. You can only use it when the `native` prop is `false` (default).
renderValue	func		Render the selected value. You can only use it when the `native` prop is `false` (default). Signature: `function(value: any) => ReactNode` value: The `value` provided to the component.
SelectDisplayProps	object		Props applied to the clickable div element.
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.
value	'' \| any		The `input` value. Providing an empty string will select no options. This prop is required when the `native` prop is `false` (default). Set to an empty string `''` if you don't want any of the available options to be selected. If the value is an object it must have reference equality with the option in order to be selected. If the value is not an object, the string representation must match with the string representation of the option in order to be selected.
variant	'filled' \| 'outlined' \| 'standard'	'outlined'	The variant to use.

ref 则会被传递到根元素中。

继承

尽管上文没有明文记录， OutlinedInput 组件的属性(props) 在组件Select上同样是可用的。你可以利用这一点来指向嵌套组件

CSS

规则名称	全局类名	描述
select	.MuiSelect-select	Styles applied to the select component `select` class.
multiple	.MuiSelect-multiple	Styles applied to the select component if `multiple={true}`.
filled	.MuiSelect-filled	Styles applied to the select component if `variant="filled"`.
outlined	.MuiSelect-outlined	Styles applied to the select component if `variant="outlined"`.
standard	.MuiSelect-standard	Styles applied to the select component if `variant="standard"`.
disabled	.Mui-disabled	Pseudo-class applied to the select component `disabled` class.
icon	.MuiSelect-icon	Styles applied to the icon component.
iconOpen	.MuiSelect-iconOpen	Styles applied to the icon component if the popup is open.
iconFilled	.MuiSelect-iconFilled	Styles applied to the icon component if `variant="filled"`.
iconOutlined	.MuiSelect-iconOutlined	Styles applied to the icon component if `variant="outlined"`.
iconStandard	.MuiSelect-iconStandard	Styles applied to the icon component if `variant="standard"`.
nativeInput	.MuiSelect-nativeInput	Styles applied to the underlying native input component.

您可以使用组件自定义选项对组件进行个性化：

具备全局类名.
在自定义主体中，设定一个规则名称作为组件的styleOverrides属性的一部分。

演示项目

Select