提示信息

展示上下文中的成功、警告、错误或信息提示。

本指南覆盖默认 Emotion 环境的 Material UI Core；扩展包与额外示例按清单单独标注。

使用场景与业务边界

严重程度只是提示语义，不证明业务成功；持续性错误还需要恢复操作。

原生组成与范围

Alert, AlertTitle

保持 Material UI 原生组合与类型，不替换为 JGuang／Base UI／Radix 同名 API。示例条目不是额外组件。

原生安装与初始化

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

采用原生 npm 包与 Emotion，不提供虚构的 JGuang UI Registry 地址。将示例放在原生 ThemeProvider 内，按项目选择 CssBaseline 或 ScopedCssBaseline。先检查 React、现有 Provider、锁文件与 SSR 配置；不要覆盖用户文件或忽略 peer 冲突。本批实际验收 React 19.2.8；React 18 及以下须匹配 react-is。完整初始化规则见随附的双语 setup 文档。

关键原生参数

仅解释本指南选出的关键参数，不是平铺的通用 API。原生继承来源、slot 结构、可空值与泛型仍按固定源码保留。

可运行原生示例

下列机器键只选择示例入口，不会作为通用 variant 属性传入每个组件。原生示例 JSX 与数据保持上游原文；JGuang 编写的验收示例明确标注。

• 基础介绍 · SimpleAlert · 上游原生示例
• 提示严重程度 · BasicAlerts · 上游原生示例
• 填充样式 · FilledAlerts · 上游原生示例
• 描边样式 · OutlinedAlerts · 上游原生示例
• 颜色 · ColorAlerts · 上游原生示例
• 操作 · ActionAlerts · 上游原生示例
• 图标配置 · IconAlerts · 上游原生示例
• 标题 · DescriptionAlerts · 上游原生示例
• 多种过渡动画 · TransitionAlerts · 上游原生示例

真实使用示例

固定版本的未修改原生示例；复制时同时保留所需的局部辅助文件。

import Alert from '@mui/material/Alert';
import CheckIcon from '@mui/icons-material/Check';

export default function SimpleAlert() {
  return (
    <Alert icon={<CheckIcon fontSize="inherit" />} severity="success">
      Here is a gentle confirmation that your action was successful.
    </Alert>
  );
}

示例依赖边界

@mui/material/Alert, @mui/icons-material/Check, @mui/material/Stack, @mui/material/Button, @mui/icons-material/CheckCircleOutlined, @mui/material/AlertTitle, react, @mui/material/Box, @mui/material/IconButton, @mui/material/Collapse, @mui/icons-material/Close

直接导入 Icons／System／Utils 的示例需要匹配 9.4.0 包。局部数据与辅助文件属于示例闭包，不是额外组件。远程图片和模拟操作不提供后端。

固定上游 API 元数据参考

以下表格保留上游元数据，不是重新推断的通用类型体系。条件泛型、继承属性与回调细节以以下源码声明为准。主题默认配置可能覆盖元数据默认值。

Alert

import Alert from '@mui/material/Alert';
import { Alert } from '@mui/material';

原生继承: Paper. 父级与 DOM 属性未被伪造为本组件新属性。

AlertTitle

import AlertTitle from '@mui/material/AlertTitle';
import { AlertTitle } from '@mui/material';

原生继承: Typography. 父级与 DOM 属性未被伪造为本组件新属性。

原生源码声明

声明与 import 从固定源码提取，不平铺联合类型或外部继承。英文注释／类型属于原始源码参考，不代表上游正文已全文翻译。共享类型仍位于原生包中。

vendor/src/Alert/Alert.d.ts

import * as React from 'react';

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

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

import { SvgIconProps } from '../SvgIcon';

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

import { InternalStandardProps as StandardProps } from '../internal';

import { IconButtonProps } from '../IconButton';

import { PaperProps } from '../Paper';

import { AlertClasses } from './alertClasses';

import { CreateSlotsAndSlotProps, SlotProps } from '../utils/types';

export type AlertColor = 'success' | 'info' | 'warning' | 'error';

export interface AlertPropsVariantOverrides {}

export interface AlertPropsColorOverrides {}

export interface AlertRootSlotPropsOverrides {}

export interface AlertIconSlotPropsOverrides {}

export interface AlertMessageSlotPropsOverrides {}

export interface AlertActionSlotPropsOverrides {}

export interface AlertCloseButtonSlotPropsOverrides {}

export interface AlertCloseIconSlotPropsOverrides {}

export interface AlertSlots {
  /**
   * The component that renders the root slot.
   * @default Paper
   */
  root: React.ElementType;
  /**
   * The component that renders the icon slot.
   * @default div
   */
  icon: React.ElementType;
  /**
   * The component that renders the message slot.
   * @default div
   */
  message: React.ElementType;
  /**
   * The component that renders the action slot.
   * @default div
   */
  action: React.ElementType;
  /**
   * The component that renders the close button.
   * @default IconButton
   */
  closeButton: React.ElementType;
  /**
   * The component that renders the close icon.
   * @default svg
   */
  closeIcon: React.ElementType;
}

export type AlertSlotsAndSlotProps = CreateSlotsAndSlotProps<
  AlertSlots,
  {
    /**
     * Props forwarded to the root slot.
     * By default, the available props are based on the [Paper](https://mui.com/material-ui/api/paper/#props) component.
     */
    root: SlotProps<React.ElementType<PaperProps>, AlertRootSlotPropsOverrides, AlertOwnerState>;
    /**
     * Props forwarded to the icon slot.
     * By default, the available props are based on a div element.
     */
    icon: SlotProps<'div', AlertIconSlotPropsOverrides, AlertOwnerState>;
    /**
     * Props forwarded to the message slot.
     * By default, the available props are based on a div element.
     */
    message: SlotProps<'div', AlertMessageSlotPropsOverrides, AlertOwnerState>;
    /**
     * Props forwarded to the action slot.
     * By default, the available props are based on a div element.
     */
    action: SlotProps<'div', AlertActionSlotPropsOverrides, AlertOwnerState>;
    /**
     * Props forwarded to the closeButton slot.
     * By default, the available props are based on the [IconButton](https://mui.com/material-ui/api/icon-button/#props) component.
     */
    closeButton: SlotProps<
      React.ElementType<IconButtonProps>,
      AlertCloseButtonSlotPropsOverrides,
      AlertOwnerState
    >;
    /**
     * Props forwarded to the closeIcon slot.
     * By default, the available props are based on the [SvgIcon](https://mui.com/material-ui/api/svg-icon/#props) component.
     */
    closeIcon: SlotProps<
      React.ElementType<SvgIconProps>,
      AlertCloseIconSlotPropsOverrides,
      AlertOwnerState
    >;
  }
>;

export interface AlertProps extends StandardProps<PaperProps, 'variant'>, AlertSlotsAndSlotProps {
  /**
   * The action to display. It renders after the message, at the end of the alert.
   */
  action?: React.ReactNode;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<AlertClasses> | undefined;
  /**
   * Override the default label for the *close popup* icon button.
   *
   * For localization purposes, you can use the provided [translations](https://mui.com/material-ui/guides/localization/).
   * @default 'Close'
   */
  closeText?: string | undefined;
  /**
   * The color of the component. Unless provided, the value is taken from the `severity` prop.
   * 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).
   */
  color?: OverridableStringUnion<AlertColor, AlertPropsColorOverrides> | undefined;
  /**
   * The severity of the alert. This defines the color and icon used.
   * @default 'success'
   */
  severity?: OverridableStringUnion<AlertColor, AlertPropsColorOverrides> | undefined;
  /**
   * Override the icon displayed before the children.
   * Unless provided, the icon is mapped to the value of the `severity` prop.
   * Set to `false` to remove the `icon`.
   */
  icon?: React.ReactNode;
  /**
   * The ARIA role attribute of the element.
   * @default 'alert'
   */
  role?: string | undefined;
  /**
   * The component maps the `severity` prop to a range of different icons,
   * for instance success to `<SuccessOutlined>`.
   * If you wish to change this mapping, you can provide your own.
   * Alternatively, you can use the `icon` prop to override the icon displayed.
   */
  iconMapping?:
    | Partial<Record<OverridableStringUnion<AlertColor, AlertPropsColorOverrides>, React.ReactNode>>
    | undefined;
  /**
   * Callback fired when the component requests to be closed.
   * When provided and no `action` prop is set, a close icon button is displayed that triggers the callback when clicked.
   * @param {React.SyntheticEvent} event The event source of the callback.
   */
  onClose?: ((event: React.SyntheticEvent) => void) | undefined;
  /**
   * The variant to use.
   * @default 'standard'
   */
  variant?:
    | OverridableStringUnion<'standard' | 'filled' | 'outlined', AlertPropsVariantOverrides>
    | undefined;
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
}

export interface AlertOwnerState extends AlertProps {}

export default function Alert(props: AlertProps): React.JSX.Element;

vendor/src/AlertTitle/AlertTitle.d.ts

import * as React from 'react';

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

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

import { TypographyProps } from '../Typography';

import { AlertTitleClasses } from './alertTitleClasses';

export interface AlertTitleProps extends TypographyProps<'div'> {
  /**
   * The content of the component.
   */
  children?: React.ReactNode;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<AlertTitleClasses> | undefined;
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
}

export default function AlertTitle(props: AlertTitleProps): React.JSX.Element;

安装后验收

执行严格类型检查、生产构建和实际交互。检查键盘标签／焦点、原生支持的禁用／错误／只读语义、深浅色、窄屏和减少动画。按真实宿主数据检查回调，不把复制提示词当作安装完成。初始化工具还需检查服务端 HTML 与无告警水合。

来源与许可

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

MIT · @mui/material@9.4.0. 保留上游原始内容与许可证。上游完整原文保留于 vendor/docs，不标为全文中文化。