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137 lines
3.7 KiB
Markdown
137 lines
3.7 KiB
Markdown
---
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category: Components
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type: Navigation
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title: Breadcrumb
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cover: https://gw.alipayobjects.com/zos/alicdn/9Ltop8JwH/Breadcrumb.svg
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---
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A breadcrumb displays the current location within a hierarchy. It allows going back to states higher up in the hierarchy.
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## When To Use
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- When the system has more than two layers in a hierarchy.
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- When you need to inform the user of where they are.
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- When the user may need to navigate back to a higher level.
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### Usage upgrade after 4.24.0
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```__react
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import Alert from '../alert';
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ReactDOM.render(<Alert message="After version 4.24.0, we provide a simpler usage <Breadcrumb.Item menu={{ items: [...] }}> with better performance and potential of writing simpler code style in your applications. Meanwhile, we deprecated the old usage in browser console, we will remove it in antd 5.0." />, mountNode);
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```
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```jsx
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// works when >=4.24.0, recommended ✅
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const items = [
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{ label: 'item 1', key: 'item-1' }, // remember to pass the key prop
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{ label: 'item 2', key: 'item-2' },
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];
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return (
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<Breadcrumb>
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<Breadcrumb.Item menu={{ items }}>Ant Design</Breadcrumb.Item>
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</Breadcrumb>
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);
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// works when <4.24.0, deprecated when >=4.24.0 🙅🏻♀️
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const menu = (
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<Menu>
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<Menu.Item>item 1</Menu.Item>
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<Menu.Item>item 2</Menu.Item>
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</Menu>
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);
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return (
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<Breadcrumb>
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<Breadcrumb.Item overlay={menu}>Ant Design</Breadcrumb.Item>
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</Breadcrumb>
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);
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```
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## API
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### Breadcrumb
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| Property | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
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| itemRender | Custom item renderer | (route, params, routes, paths) => ReactNode | - | |
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| params | Routing parameters | object | - | |
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| routes | The routing stack information of router | [routes\[\]](#routes) | - | |
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| separator | Custom separator | ReactNode | `/` | |
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### Breadcrumb.Item
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| Property | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
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| className | The additional css class | string | - | |
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| dropdownProps | The dropdown props | [Dropdown](/components/dropdown) | - | |
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| href | Target of hyperlink | string | - | |
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| menu | The menu props | [MenuProps](/components/menu/#API) | - | 4.24.0 |
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| onClick | Set the handler to handle click event | (e:MouseEvent) => void | - | |
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### Breadcrumb.Separator
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| Property | Description | Type | Default | Version |
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| -------- | ---------------- | --------- | ------- | ------- |
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| children | Custom separator | ReactNode | `/` | |
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> When using `Breadcrumb.Separator`,its parent component must be set to `separator=""`, otherwise the default separator of the parent component will appear.
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### routes
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```ts
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interface Route {
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path: string;
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breadcrumbName: string;
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children: Array<{
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path: string;
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breadcrumbName: string;
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}>;
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}
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```
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### Use with browserHistory
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The link of Breadcrumb item targets `#` by default, you can use `itemRender` to make a `browserHistory` Link.
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```jsx
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import { Link } from 'react-router';
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const routes = [
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{
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path: 'index',
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breadcrumbName: 'home',
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},
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{
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path: 'first',
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breadcrumbName: 'first',
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children: [
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{
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path: '/general',
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breadcrumbName: 'General',
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},
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{
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path: '/layout',
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breadcrumbName: 'Layout',
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},
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{
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path: '/navigation',
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breadcrumbName: 'Navigation',
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},
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],
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},
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{
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path: 'second',
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breadcrumbName: 'second',
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},
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];
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function itemRender(route, params, routes, paths) {
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const last = routes.indexOf(route) === routes.length - 1;
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return last ? (
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<span>{route.breadcrumbName}</span>
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) : (
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<Link to={paths.join('/')}>{route.breadcrumbName}</Link>
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);
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}
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return <Breadcrumb itemRender={itemRender} routes={routes} />;
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```
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