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

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 />,
  },
];

class SiderDemo extends React.Component {
  state = {
    collapsed: true,
  };

  toggle = () => {
    this.setState({
      collapsed: !this.state.collapsed,
    });
  };

  render() {
    return (
      <Layout>
        <Sider trigger={null} collapsible collapsed={this.state.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(this.state.collapsed ? MenuUnfoldOutlined : MenuFoldOutlined, {
              className: 'trigger',
              onClick: this.toggle,
            })}
          </Header>
          <Content
            className="site-layout-background"
            style={{
              margin: '24px 16px',
              padding: 24,
              minHeight: 280,
            }}
          >
            Content
          </Content>
        </Layout>
      </Layout>
    );
  }
}

ReactDOM.render(<SiderDemo />, mountNode);
```

```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;
}
```