Breadcrumb面包屑

显示当前页面在系统层级结构中的位置，并能向上返回。

何时使用

• 当系统拥有超过两级以上的层级结构时；

• 当需要告知用户『你在哪里』时；

• 当需要向上导航的功能时。

代码演示

基本

最简单的用法。

import { Breadcrumb } from 'antd';
ReactDOM.render(
  <Breadcrumb>
    <Breadcrumb.Item>Home</Breadcrumb.Item>
    <Breadcrumb.Item>
      <a href="">Application Center</a>
    </Breadcrumb.Item>
    <Breadcrumb.Item>
      <a href="">Application List</a>
    </Breadcrumb.Item>
    <Breadcrumb.Item>An Application</Breadcrumb.Item>
  </Breadcrumb>,
  mountNode,
);

其它路由

和 react-router@4+，或其他路由进行结合使用。

import { HashRouter as Router, Route, Switch, Link, withRouter } from 'react-router-dom';
import { Breadcrumb, Alert } from 'antd';
const Apps = () => (
  <ul className="app-list">
    <li>
      <Link to="/apps/1">Application1</Link>：<Link to="/apps/1/detail">Detail</Link>
    </li>
    <li>
      <Link to="/apps/2">Application2</Link>：<Link to="/apps/2/detail">Detail</Link>
    </li>
  </ul>
);
const breadcrumbNameMap = {
  '/apps': 'Application List',
  '/apps/1': 'Application1',
  '/apps/2': 'Application2',
  '/apps/1/detail': 'Detail',
  '/apps/2/detail': 'Detail',
};
const Home = withRouter(props => {
  const { location } = props;
  const pathSnippets = location.pathname.split('/').filter(i => i);
  const extraBreadcrumbItems = pathSnippets.map((_, index) => {
    const url = `/${pathSnippets.slice(0, index + 1).join('/')}`;
    return (
      <Breadcrumb.Item key={url}>
        <Link to={url}>{breadcrumbNameMap[url]}</Link>
      </Breadcrumb.Item>
    );
  });
  const breadcrumbItems = [
    <Breadcrumb.Item key="home">
      <Link to="/">Home</Link>
    </Breadcrumb.Item>,
  ].concat(extraBreadcrumbItems);
  return (
    <div className="demo">
      <div className="demo-nav">
        <Link to="/">Home</Link>
        <Link to="/apps">Application List</Link>
      </div>
      <Switch>
        <Route path="/apps" component={Apps} />
        <Route render={() => <span>Home Page</span>} />
      </Switch>
      <Alert style={{ margin: '16px 0' }} message="Click the navigation above to switch:" />
      <Breadcrumb>{breadcrumbItems}</Breadcrumb>
    </div>
  );
});
ReactDOM.render(
  <Router>
    <Home />
  </Router>,
  mountNode,
);

.demo {
  margin: 16px;
}
.demo-nav {
  height: 30px;
  margin-bottom: 16px;
  line-height: 30px;
  background: #f8f8f8;
}
.demo-nav a {
  padding: 0 8px;
  line-height: 30px;
}
.app-list {
  margin-top: 16px;
}

带下拉菜单的面包屑

面包屑支持下拉菜单。

import { Breadcrumb, Menu } from 'antd';
const menu = (
  <Menu>
    <Menu.Item>
      <a target="_blank" rel="noopener noreferrer" href="http://www.alipay.com/">
        General
      </a>
    </Menu.Item>
    <Menu.Item>
      <a target="_blank" rel="noopener noreferrer" href="http://www.taobao.com/">
        Layout
      </a>
    </Menu.Item>
    <Menu.Item>
      <a target="_blank" rel="noopener noreferrer" href="http://www.tmall.com/">
        Navigation
      </a>
    </Menu.Item>
  </Menu>
);
ReactDOM.render(
  <Breadcrumb>
    <Breadcrumb.Item>Ant Design</Breadcrumb.Item>
    <Breadcrumb.Item>
      <a href="">Component</a>
    </Breadcrumb.Item>
    <Breadcrumb.Item overlay={menu}>
      <a href="">General</a>
    </Breadcrumb.Item>
    <Breadcrumb.Item>Button</Breadcrumb.Item>
  </Breadcrumb>,
  mountNode,
);

带有图标的

图标放在文字前面。

import { Breadcrumb } from 'antd';
import { HomeOutlined, UserOutlined } from '@ant-design/icons';
ReactDOM.render(
  <Breadcrumb>
    <Breadcrumb.Item href="">
      <HomeOutlined />
    </Breadcrumb.Item>
    <Breadcrumb.Item href="">
      <UserOutlined />
      <span>Application List</span>
    </Breadcrumb.Item>
    <Breadcrumb.Item>Application</Breadcrumb.Item>
  </Breadcrumb>,
  mountNode,
);

分隔符

使用 separator=">" 可以自定义分隔符。

import { Breadcrumb } from 'antd';
ReactDOM.render(
  <Breadcrumb separator=">">
    <Breadcrumb.Item>Home</Breadcrumb.Item>
    <Breadcrumb.Item href="">Application Center</Breadcrumb.Item>
    <Breadcrumb.Item href="">Application List</Breadcrumb.Item>
    <Breadcrumb.Item>An Application</Breadcrumb.Item>
  </Breadcrumb>,
  mountNode,
);

分隔符

使用 Breadcrumb.Separator 可以自定义分隔符。

import { Breadcrumb } from 'antd';
ReactDOM.render(
  <Breadcrumb separator="">
    <Breadcrumb.Item>Location</Breadcrumb.Item>
    <Breadcrumb.Separator>:</Breadcrumb.Separator>
    <Breadcrumb.Item href="">Application Center</Breadcrumb.Item>
    <Breadcrumb.Separator />
    <Breadcrumb.Item href="">Application List</Breadcrumb.Item>
    <Breadcrumb.Separator />
    <Breadcrumb.Item>An Application</Breadcrumb.Item>
  </Breadcrumb>,
  mountNode,
);

API

Breadcrumb

Breadcrumb.Item

Breadcrumb.Separator

注意：在使用 Breadcrumb.Separator 时，其父组件的分隔符必须设置为 separator=""，否则会出现父组件默认的分隔符。

routes

interface Route {
  path: string;
  breadcrumbName: string;
  children: Array<{
    path: string;
    breadcrumbName: string;
  }>;
}

和 browserHistory 配合

和 react-router 一起使用时，默认生成的 url 路径是带有 # 的，如果和 browserHistory 一起使用的话，你可以使用 itemRender 属性定义面包屑链接。

import { Link } from 'react-router';
const routes = [
  {
    path: 'index',
    breadcrumbName: 'home',
  },
  {
    path: 'first',
    breadcrumbName: 'first',
    children: [
      {
        path: '/general',
        breadcrumbName: 'General',
      },
      {
        path: '/layout',
        breadcrumbName: 'Layout',
      },
      {
        path: '/navigation',
        breadcrumbName: 'Navigation',
      },
    ],
  },
  {
    path: 'second',
    breadcrumbName: 'second',
  },
];
function itemRender(route, params, routes, paths) {
  const last = routes.indexOf(route) === routes.length - 1;
  return last ? (
    <span>{route.breadcrumbName}</span>
  ) : (
    <Link to={paths.join('/')}>{route.breadcrumbName}</Link>
  );
}
return <Breadcrumb itemRender={itemRender} routes={routes} />;