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。

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

const { Header, Sider, Content } = Layout;
const { SubMenu } = Menu;

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']}>
            <Menu.Item key="1" icon={<PieChartOutlined />}>
              Option 1
            </Menu.Item>
            <Menu.Item key="2" icon={<DesktopOutlined />}>
              Option 2
            </Menu.Item>
            <SubMenu key="sub1" icon={<UserOutlined />} title="User">
              <Menu.Item key="3">Tom</Menu.Item>
              <Menu.Item key="4">Bill</Menu.Item>
              <Menu.Item key="5">Alex</Menu.Item>
            </SubMenu>
            <SubMenu key="sub2" icon={<TeamOutlined />} title="Team">
              <Menu.Item key="6">Team 1</Menu.Item>
              <Menu.Item key="8">Team 2</Menu.Item>
            </SubMenu>
            <Menu.Item key="9" icon={<FileOutlined />} />
          </Menu>
        </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;
}
```