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, Icon } from 'antd';

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

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 type="pie-chart" />
              <span>Option 1</span>
            </Menu.Item>
            <Menu.Item key="2">
              <Icon type="desktop" />
              <span>Option 2</span>
            </Menu.Item>
            <SubMenu
              key="sub1"
              title={
                <span>
                  <Icon type="user" />
                  <span>User</span>
                </span>
              }
            >
              <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"
              title={
                <span>
                  <Icon type="team" />
                  <span>Team</span>
                </span>
              }
            >
              <Menu.Item key="6">Team 1</Menu.Item>
              <Menu.Item key="8">Team 2</Menu.Item>
            </SubMenu>
            <Menu.Item key="9">
              <Icon type="file" />
              <span>File</span>
            </Menu.Item>
          </Menu>
        </Sider>
        <Layout>
          <Header style={{ background: '#fff', padding: 0 }}>
            <Icon
              className="trigger"
              type={this.state.collapsed ? 'menu-unfold' : 'menu-fold'}
              onClick={this.toggle}
            />
          </Header>
          <Content
            style={{
              margin: '24px 16px',
              padding: 24,
              background: '#fff',
              minHeight: 280,
            }}
          >
            Content
          </Content>
        </Layout>
      </Layout>
    );
  }
}

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

````css
#components-layout-demo-custom-trigger .trigger {
  font-size: 18px;
  line-height: 64px;
  padding: 0 24px;
  cursor: pointer;
  transition: color .3s;
}

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

#components-layout-demo-custom-trigger .logo {
  height: 32px;
  background: rgba(255,255,255,.2);
  margin: 16px;
}
````