面包屑

使用链接层次结构显示当前资源的路径。

import Link from "next/link"

import {
  Breadcrumb,
  BreadcrumbEllipsis,
  BreadcrumbItem,
  BreadcrumbLink,
  BreadcrumbList,
  BreadcrumbPage,
  BreadcrumbSeparator,
} from "@/components/ui/breadcrumb"
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu"

export function BreadcrumbDemo() {
  return (
    <Breadcrumb>
      <BreadcrumbList>
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href="/">Home</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator />
        <BreadcrumbItem>
          <DropdownMenu>
            <DropdownMenuTrigger className="flex items-center gap-1">
              <BreadcrumbEllipsis className="size-4" />
              <span className="sr-only">Toggle menu</span>
            </DropdownMenuTrigger>
            <DropdownMenuContent align="start">
              <DropdownMenuItem>Documentation</DropdownMenuItem>
              <DropdownMenuItem>Themes</DropdownMenuItem>
              <DropdownMenuItem>GitHub</DropdownMenuItem>
            </DropdownMenuContent>
          </DropdownMenu>
        </BreadcrumbItem>
        <BreadcrumbSeparator />
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href="/docs/components">Components</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator />
        <BreadcrumbItem>
          <BreadcrumbPage>Breadcrumb</BreadcrumbPage>
        </BreadcrumbItem>
      </BreadcrumbList>
    </Breadcrumb>
  )
}

安装


pnpm dlx shadcn@latest add breadcrumb

用法

import {
  Breadcrumb,
  BreadcrumbItem,
  BreadcrumbLink,
  BreadcrumbList,
  BreadcrumbPage,
  BreadcrumbSeparator,
} from "@/components/ui/breadcrumb"

<Breadcrumb>
  <BreadcrumbList>
    <BreadcrumbItem>
      <BreadcrumbLink href="/">Home</BreadcrumbLink>
    </BreadcrumbItem>
    <BreadcrumbSeparator />
    <BreadcrumbItem>
      <BreadcrumbLink href="/components">Components</BreadcrumbLink>
    </BreadcrumbItem>
    <BreadcrumbSeparator />
    <BreadcrumbItem>
      <BreadcrumbPage>Breadcrumb</BreadcrumbPage>
    </BreadcrumbItem>
  </BreadcrumbList>
</Breadcrumb>

示例

自定义分隔符

使用自定义组件作为 children，用于 <BreadcrumbSeparator /> 来创建自定义分隔符。

import Link from "next/link"
import { SlashIcon } from "lucide-react"

import {
  Breadcrumb,
  BreadcrumbItem,
  BreadcrumbLink,
  BreadcrumbList,
  BreadcrumbPage,
  BreadcrumbSeparator,
} from "@/components/ui/breadcrumb"

export function BreadcrumbWithCustomSeparator() {
  return (
    <Breadcrumb>
      <BreadcrumbList>
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href="/">Home</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator>
          <SlashIcon />
        </BreadcrumbSeparator>
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href="/components">Components</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator>
          <SlashIcon />
        </BreadcrumbSeparator>
        <BreadcrumbItem>
          <BreadcrumbPage>Breadcrumb</BreadcrumbPage>
        </BreadcrumbItem>
      </BreadcrumbList>
    </Breadcrumb>
  )
}

import { SlashIcon } from "lucide-react"
 
...
 
<Breadcrumb>
  <BreadcrumbList>
    <BreadcrumbItem>
      <BreadcrumbLink href="/">Home</BreadcrumbLink>
    </BreadcrumbItem>
    <BreadcrumbSeparator>
      <SlashIcon />
    </BreadcrumbSeparator>
    <BreadcrumbItem>
      <BreadcrumbLink href="/components">Components</BreadcrumbLink>
    </BreadcrumbItem>
  </BreadcrumbList>
</Breadcrumb>

您可以将 <BreadcrumbItem /> 与 <DropdownMenu /> 组合使用，在面包屑中创建下拉菜单。

import Link from "next/link"
import { ChevronDownIcon, SlashIcon } from "lucide-react"

import {
  Breadcrumb,
  BreadcrumbItem,
  BreadcrumbLink,
  BreadcrumbList,
  BreadcrumbPage,
  BreadcrumbSeparator,
} from "@/components/ui/breadcrumb"
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu"

export function BreadcrumbWithDropdown() {
  return (
    <Breadcrumb>
      <BreadcrumbList>
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href="/">Home</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator>
          <SlashIcon />
        </BreadcrumbSeparator>
        <BreadcrumbItem>
          <DropdownMenu>
            <DropdownMenuTrigger className="flex items-center gap-1 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-3.5">
              Components
              <ChevronDownIcon />
            </DropdownMenuTrigger>
            <DropdownMenuContent align="start">
              <DropdownMenuItem>Documentation</DropdownMenuItem>
              <DropdownMenuItem>Themes</DropdownMenuItem>
              <DropdownMenuItem>GitHub</DropdownMenuItem>
            </DropdownMenuContent>
          </DropdownMenu>
        </BreadcrumbItem>
        <BreadcrumbSeparator>
          <SlashIcon />
        </BreadcrumbSeparator>
        <BreadcrumbItem>
          <BreadcrumbPage>Breadcrumb</BreadcrumbPage>
        </BreadcrumbItem>
      </BreadcrumbList>
    </Breadcrumb>
  )
}

import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu"
 
...
 
<BreadcrumbItem>
  <DropdownMenu>
    <DropdownMenuTrigger>
      Components
    </DropdownMenuTrigger>
    <DropdownMenuContent align="start">
      <DropdownMenuItem>Documentation</DropdownMenuItem>
      <DropdownMenuItem>Themes</DropdownMenuItem>
      <DropdownMenuItem>GitHub</DropdownMenuItem>
    </DropdownMenuContent>
  </DropdownMenu>
</BreadcrumbItem>

折叠

我们提供一个 <BreadcrumbEllipsis /> 组件，用于在面包屑过长时显示折叠状态。

import Link from "next/link"

import {
  Breadcrumb,
  BreadcrumbEllipsis,
  BreadcrumbItem,
  BreadcrumbLink,
  BreadcrumbList,
  BreadcrumbPage,
  BreadcrumbSeparator,
} from "@/components/ui/breadcrumb"

export function BreadcrumbCollapsed() {
  return (
    <Breadcrumb>
      <BreadcrumbList>
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href="/">Home</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator />
        <BreadcrumbItem>
          <BreadcrumbEllipsis />
        </BreadcrumbItem>
        <BreadcrumbSeparator />
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href="/docs/components">Components</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator />
        <BreadcrumbItem>
          <BreadcrumbPage>Breadcrumb</BreadcrumbPage>
        </BreadcrumbItem>
      </BreadcrumbList>
    </Breadcrumb>
  )
}

import { BreadcrumbEllipsis } from "@/components/ui/breadcrumb"
 
...
 
<Breadcrumb>
  <BreadcrumbList>
    {/* ... */}
    <BreadcrumbItem>
      <BreadcrumbEllipsis />
    </BreadcrumbItem>
    {/* ... */}
  </BreadcrumbList>
</Breadcrumb>

链接组件

要使用路由库中的自定义链接组件，您可以在 <BreadcrumbLink /> 上使用 asChild prop。

import Link from "next/link"

import {
  Breadcrumb,
  BreadcrumbItem,
  BreadcrumbLink,
  BreadcrumbList,
  BreadcrumbPage,
  BreadcrumbSeparator,
} from "@/components/ui/breadcrumb"

export function BreadcrumbWithCustomSeparator() {
  return (
    <Breadcrumb>
      <BreadcrumbList>
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href="/">Home</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator />
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href="/components">Components</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator />
        <BreadcrumbItem>
          <BreadcrumbPage>Breadcrumb</BreadcrumbPage>
        </BreadcrumbItem>
      </BreadcrumbList>
    </Breadcrumb>
  )
}

import { Link } from "next/link"
 
...
 
<Breadcrumb>
  <BreadcrumbList>
    <BreadcrumbItem>
      <BreadcrumbLink asChild>
        <Link href="/">Home</Link>
      </BreadcrumbLink>
    </BreadcrumbItem>
    {/* ... */}
  </BreadcrumbList>
</Breadcrumb>

响应式

这是一个响应式面包屑的示例，它将 <BreadcrumbItem /> 与 <BreadcrumbEllipsis />、<DropdownMenu /> 和 <Drawer /> 组合使用。

它在桌面端显示下拉菜单，在移动端显示抽屉。

"use client"

import * as React from "react"
import Link from "next/link"

import { useMediaQuery } from "@/hooks/use-media-query"
import {
  Breadcrumb,
  BreadcrumbEllipsis,
  BreadcrumbItem,
  BreadcrumbLink,
  BreadcrumbList,
  BreadcrumbPage,
  BreadcrumbSeparator,
} from "@/components/ui/breadcrumb"
import { Button } from "@/components/ui/button"
import {
  Drawer,
  DrawerClose,
  DrawerContent,
  DrawerDescription,
  DrawerFooter,
  DrawerHeader,
  DrawerTitle,
  DrawerTrigger,
} from "@/components/ui/drawer"
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu"

const items = [
  { href: "#", label: "Home" },
  { href: "#", label: "Documentation" },
  { href: "#", label: "Building Your Application" },
  { href: "#", label: "Data Fetching" },
  { label: "Caching and Revalidating" },
]

const ITEMS_TO_DISPLAY = 3

export function BreadcrumbResponsive() {
  const [open, setOpen] = React.useState(false)
  const isDesktop = useMediaQuery("(min-width: 768px)")

  return (
    <Breadcrumb>
      <BreadcrumbList>
        <BreadcrumbItem>
          <BreadcrumbLink asChild>
            <Link href={items[0].href ?? "/"}>{items[0].label}</Link>
          </BreadcrumbLink>
        </BreadcrumbItem>
        <BreadcrumbSeparator />
        {items.length > ITEMS_TO_DISPLAY ? (
          <>
            <BreadcrumbItem>
              {isDesktop ? (
                <DropdownMenu open={open} onOpenChange={setOpen}>
                  <DropdownMenuTrigger
                    className="flex items-center gap-1"
                    aria-label="Toggle menu"
                  >
                    <BreadcrumbEllipsis className="size-4" />
                  </DropdownMenuTrigger>
                  <DropdownMenuContent align="start">
                    {items.slice(1, -2).map((item, index) => (
                      <DropdownMenuItem key={index}>
                        <Link href={item.href ? item.href : "#"}>
                          {item.label}
                        </Link>
                      </DropdownMenuItem>
                    ))}
                  </DropdownMenuContent>
                </DropdownMenu>
              ) : (
                <Drawer open={open} onOpenChange={setOpen}>
                  <DrawerTrigger aria-label="Toggle Menu">
                    <BreadcrumbEllipsis className="h-4 w-4" />
                  </DrawerTrigger>
                  <DrawerContent>
                    <DrawerHeader className="text-left">
                      <DrawerTitle>Navigate to</DrawerTitle>
                      <DrawerDescription>
                        Select a page to navigate to.
                      </DrawerDescription>
                    </DrawerHeader>
                    <div className="grid gap-1 px-4">
                      {items.slice(1, -2).map((item, index) => (
                        <Link
                          key={index}
                          href={item.href ? item.href : "#"}
                          className="py-1 text-sm"
                        >
                          {item.label}
                        </Link>
                      ))}
                    </div>
                    <DrawerFooter className="pt-4">
                      <DrawerClose asChild>
                        <Button variant="outline">Close</Button>
                      </DrawerClose>
                    </DrawerFooter>
                  </DrawerContent>
                </Drawer>
              )}
            </BreadcrumbItem>
            <BreadcrumbSeparator />
          </>
        ) : null}
        {items.slice(-ITEMS_TO_DISPLAY + 1).map((item, index) => (
          <BreadcrumbItem key={index}>
            {item.href ? (
              <>
                <BreadcrumbLink
                  asChild
                  className="max-w-20 truncate md:max-w-none"
                >
                  <Link href={item.href}>{item.label}</Link>
                </BreadcrumbLink>
                <BreadcrumbSeparator />
              </>
            ) : (
              <BreadcrumbPage className="max-w-20 truncate md:max-w-none">
                {item.label}
              </BreadcrumbPage>
            )}
          </BreadcrumbItem>
        ))}
      </BreadcrumbList>
    </Breadcrumb>
  )
}

徽章按钮

本页目录

安装用法示例自定义分隔符下拉菜单折叠链接组件响应式

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