Notification通知提醒框

全局展示通知提醒信息。

何时使用

在系统四个角显示通知提醒信息。经常用于以下情况：

• 较为复杂的通知内容。

• 带有交互的通知，给出用户下一步的行动点。

• 系统主动推送。

代码演示

基本

最简单的用法，4.5 秒后自动关闭。

import { Button, notification } from 'antd';
const openNotification = () => {
  notification.open({
    message: 'Notification Title',
    description:
      'This is the content of the notification. This is the content of the notification. This is the content of the notification.',
    onClick: () => {
      console.log('Notification Clicked!');
    },
  });
};
ReactDOM.render(
  <Button type="primary" onClick={openNotification}>
    Open the notification box
  </Button>,
  mountNode,
);

带有图标的通知提醒框

通知提醒框左侧有图标。

import { Button, notification } from 'antd';
const openNotificationWithIcon = type => {
  notification[type]({
    message: 'Notification Title',
    description:
      'This is the content of the notification. This is the content of the notification. This is the content of the notification.',
  });
};
ReactDOM.render(
  <div>
    <Button onClick={() => openNotificationWithIcon('success')}>Success</Button>
    <Button onClick={() => openNotificationWithIcon('info')}>Info</Button>
    <Button onClick={() => openNotificationWithIcon('warning')}>Warning</Button>
    <Button onClick={() => openNotificationWithIcon('error')}>Error</Button>
  </div>,
  mountNode,
);

自定义图标

图标可以被自定义。

import { Button, notification } from 'antd';
import { SmileOutlined } from '@ant-design/icons';
const openNotification = () => {
  notification.open({
    message: 'Notification Title',
    description:
      'This is the content of the notification. This is the content of the notification. This is the content of the notification.',
    icon: <SmileOutlined style={{ color: '#108ee9' }} />,
  });
};
ReactDOM.render(
  <Button type="primary" onClick={openNotification}>
    Open the notification box
  </Button>,
  mountNode,
);

自定义样式

使用 style 和 className 来定义样式。

import { Button, notification } from 'antd';
const openNotification = () => {
  notification.open({
    message: 'Notification Title',
    description:
      'This is the content of the notification. This is the content of the notification. This is the content of the notification.',
    style: {
      width: 600,
      marginLeft: 335 - 600,
    },
  });
};
ReactDOM.render(
  <Button type="primary" onClick={openNotification}>
    Open the notification box
  </Button>,
  mountNode,
);

通过 Hooks 获取上下文

通过 notification.useNotification 创建支持读取 context 的 contextHolder。

import { Button, notification, Divider } from 'antd';
import {
  RadiusUpleftOutlined,
  RadiusUprightOutlined,
  RadiusBottomleftOutlined,
  RadiusBottomrightOutlined,
} from '@ant-design/icons';
const Context = React.createContext({ name: 'Default' });
const Demo = () => {
  const [api, contextHolder] = notification.useNotification();
  const openNotification = placement => {
    api.info({
      message: `Notification ${placement}`,
      description: <Context.Consumer>{({ name }) => `Hello, ${name}!`}</Context.Consumer>,
      placement,
    });
  };
  return (
    <Context.Provider value={{ name: 'Ant Design' }}>
      {contextHolder}
      <Button type="primary" onClick={() => openNotification('topLeft')}>
        <RadiusUpleftOutlined />
        topLeft
      </Button>
      <Button type="primary" onClick={() => openNotification('topRight')}>
        <RadiusUprightOutlined />
        topRight
      </Button>
      <Divider />
      <Button type="primary" onClick={() => openNotification('bottomLeft')}>
        <RadiusBottomleftOutlined />
        bottomLeft
      </Button>
      <Button type="primary" onClick={() => openNotification('bottomRight')}>
        <RadiusBottomrightOutlined />
        bottomRight
      </Button>
    </Context.Provider>
  );
};
ReactDOM.render(<Demo />, mountNode);

自动关闭的延时

自定义通知框自动关闭的延时，默认4.5s，取消自动关闭只要将该值设为 0 即可。

import { Button, notification } from 'antd';
const openNotification = () => {
  const args = {
    message: 'Notification Title',
    description:
      'I will never close automatically. I will be close automatically. I will never close automatically.',
    duration: 0,
  };
  notification.open(args);
};
ReactDOM.render(
  <Button type="primary" onClick={openNotification}>
    Open the notification box
  </Button>,
  mountNode,
);

自定义按钮

自定义关闭按钮的样式和文字。

import { Button, notification } from 'antd';
const close = () => {
  console.log(
    'Notification was closed. Either the close button was clicked or duration time elapsed.',
  );
};
const openNotification = () => {
  const key = `open${Date.now()}`;
  const btn = (
    <Button type="primary" size="small" onClick={() => notification.close(key)}>
      Confirm
    </Button>
  );
  notification.open({
    message: 'Notification Title',
    description:
      'A function will be be called after the notification is closed (automatically after the "duration" time of manually).',
    btn,
    key,
    onClose: close,
  });
};
ReactDOM.render(
  <Button type="primary" onClick={openNotification}>
    Open the notification box
  </Button>,
  mountNode,
);

位置

通知从右上角、右下角、左下角、左上角弹出。

import { Button, notification, Divider } from 'antd';
import {
  RadiusUpleftOutlined,
  RadiusUprightOutlined,
  RadiusBottomleftOutlined,
  RadiusBottomrightOutlined,
} from '@ant-design/icons';
const openNotification = placement => {
  notification.info({
    message: `Notification ${placement}`,
    description:
      'This is the content of the notification. This is the content of the notification. This is the content of the notification.',
    placement,
  });
};
ReactDOM.render(
  <div>
    <Button type="primary" onClick={() => openNotification('topLeft')}>
      <RadiusUpleftOutlined />
      topLeft
    </Button>
    <Button type="primary" onClick={() => openNotification('topRight')}>
      <RadiusUprightOutlined />
      topRight
    </Button>
    <Divider />
    <Button type="primary" onClick={() => openNotification('bottomLeft')}>
      <RadiusBottomleftOutlined />
      bottomLeft
    </Button>
    <Button type="primary" onClick={() => openNotification('bottomRight')}>
      <RadiusBottomrightOutlined />
      bottomRight
    </Button>
  </div>,
  mountNode,
);

更新消息内容

可以通过唯一的 key 来更新内容。

import { Button, notification } from 'antd';
const key = 'updatable';
const openNotification = () => {
  notification.open({
    key,
    message: 'Notification Title',
    description: 'description.',
  });
  setTimeout(() => {
    notification.open({
      key,
      message: 'New Title',
      description: 'New description.',
    });
  }, 1000);
};
ReactDOM.render(
  <Button type="primary" onClick={openNotification}>
    Open the notification box
  </Button>,
  mountNode,
);

API

• notification.success(config)

• notification.error(config)

• notification.info(config)

• notification.warning(config)

• notification.warn(config)

• notification.open(config)

• notification.close(key: String)

• notification.destroy()

config 参数如下：

还提供了一个全局配置方法，在调用前提前配置，全局一次生效。

• notification.config(options)

notification.config({
  placement: 'bottomRight',
  bottom: 50,
  duration: 3,
});

FAQ

为什么 notification 不能获取 context、redux 的内容？

直接调用 notification 方法，antd 会通过 ReactDOM.render 动态创建新的 React 实体。其 context 与当前代码所在 context 并不相同，因而无法获取 context 信息。

当你需要 context 信息（例如 ConfigProvider 配置的内容）时，可以通过 notification.useNotification 方法会返回 api 实体以及 contextHolder 节点。将其插入到你需要获取 context 位置即可：

const [api, contextHolder] = notification.useNotification();
return (
  <Context1.Provider value="Ant">
    {/* contextHolder 在 Context1 内，它可以获得 Context1 的 context */}
    {contextHolder}
    <Context2.Provider value="Design">
      {/* contextHolder 在 Context2 外，因而不会获得 Context2 的 context */}
    </Context2.Provider>
  </Context1.Provider>
);

异同：通过 hooks 创建的 contextHolder 必须插入到子元素节点中才会生效，当你不需要上下文信息时请直接调用。