ant-design/components/layout/demo/custom-trigger-debug.md

---
order: 99
title:
  zh-CN: 自定义触发器 Debug
  en-US: Custom trigger debug
debug: true
---

## zh-CN

修改内容前，请尝试此 Demo 查看样式是否抖动。

```tsx
import {
  DesktopOutlined,
  FileOutlined,
  MenuFoldOutlined,
  MenuUnfoldOutlined,
  PieChartOutlined,
  TeamOutlined,
  UserOutlined,
} from '@ant-design/icons';
import type { MenuProps } from 'antd';
import { Layout, Menu } from 'antd';
import React, { useState } from 'react';

const { Header, Sider, Content } = Layout;

const items: MenuProps['items'] = [
  {
    key: '1',
    icon: <PieChartOutlined />,
    label: 'Option 1',
  },
  {
    key: '2',
    icon: <DesktopOutlined />,
    label: 'Option 2',
  },
  {
    key: 'sub1',
    icon: <UserOutlined />,
    label: 'User',
    children: [
      {
        key: '3',
        label: 'Tom',
      },
      {
        key: '4',
        label: 'Bill',
      },
      {
        key: '5',
        label: 'Alex',
      },
    ],
  },
  {
    key: 'sub2',
    icon: <TeamOutlined />,
    label: 'Team',
    children: [
      {
        key: '6',
        label: 'Team 1',
      },
      {
        key: '7',
        label: 'Team 2',
      },
    ],
  },
  {
    key: '9',
    icon: <FileOutlined />,
  },
];

const App: React.FC = () => {
  const [collapsed, setCollapsed] = useState(true);

  return (
    <Layout>
      <Sider trigger={null} collapsible collapsed={collapsed}>
        <div className="logo" />
        <Menu
          theme="dark"
          mode="inline"
          defaultSelectedKeys={['3']}
          defaultOpenKeys={['sub1']}
          items={items}
        />
      </Sider>
      <Layout>
        <Header className="site-layout-background" style={{ padding: 0 }}>
          {React.createElement(collapsed ? MenuUnfoldOutlined : MenuFoldOutlined, {
            className: 'trigger',
            onClick: () => setCollapsed(!collapsed),
          })}
        </Header>
        <Content
          className="site-layout-background"
          style={{
            margin: '24px 16px',
            padding: 24,
            minHeight: 280,
          }}
        >
          Content
        </Content>
      </Layout>
    </Layout>
  );
};

export default App;
```

```css
#components-layout-demo-custom-trigger .trigger {
  padding: 0 24px;
  font-size: 18px;
  line-height: 64px;
  cursor: pointer;
  transition: color 0.3s;
}

#components-layout-demo-custom-trigger .trigger:hover {
  color: #1890ff;
}
```