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Calendar

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一个允许用户输入与编辑日期的日期字段组件。

December 2025
"use client"

import * as React from "react"

import { Calendar } from "@/components/ui/calendar"

export function CalendarDemo() {
  const [date, setDate] = React.useState<Date | undefined>(new Date())

  return (
    <Calendar
      mode="single"
      selected={date}
      onSelect={setDate}
      className="rounded-md border shadow-sm"
      captionLayout="dropdown"
    />
  )
}

Blocks

我们提供了 30+ 个日历 Block,可帮助你快速搭建自定义日历组件。

可在 Blocks Library 页面查看全部日历 Block。

安装

pnpm dlx shadcn@latest add calendar

用法

import { Calendar } from "@/components/ui/calendar"
const [date, setDate] = React.useState<Date | undefined>(new Date())
 
return (
  <Calendar
    mode="single"
    selected={date}
    onSelect={setDate}
    className="rounded-lg border"
  />
)

更多信息请参阅 React DayPicker 文档。

关于

Calendar 组件基于 React DayPicker 构建。

自定义

如何自定义 Calendar 组件,请查看 React DayPicker 文档。

日期选择器

可以基于 <Calendar> 组件构建日期选择器,详情见 Date Picker 页面。

波斯 / 回历 / Jalali 日历

如需使用波斯历,请编辑 components/ui/calendar.tsx 并将 react-day-picker 替换为 react-day-picker/persian

- import { DayPicker } from "react-day-picker"
+ import { DayPicker } from "react-day-picker/persian"
خرداد ۱۴۰۴
"use client"

import * as React from "react"
import {
  ChevronDownIcon,
  ChevronLeftIcon,
  ChevronRightIcon,
} from "lucide-react"
import { DayButton, getDefaultClassNames } from "react-day-picker"
import { DayPicker } from "react-day-picker/persian"

import { cn } from "@/lib/utils"
import { Button, buttonVariants } from "@/components/ui/button"

export function CalendarHijri() {
  const [date, setDate] = React.useState<Date | undefined>(
    new Date(2025, 5, 12)
  )

  return (
    <Calendar
      mode="single"
      defaultMonth={date}
      selected={date}
      onSelect={setDate}
      className="rounded-lg border shadow-sm"
    />
  )
}

// ----------------------------------------------------------------------------
// The code below is for this example only.
// For your own calendar, you would edit the calendar.tsx component directly.
// ----------------------------------------------------------------------------
function Calendar({
  className,
  classNames,
  showOutsideDays = true,
  captionLayout = "label",
  buttonVariant = "ghost",
  formatters,
  components,
  ...props
}: React.ComponentProps<typeof DayPicker> & {
  buttonVariant?: React.ComponentProps<typeof Button>["variant"]
}) {
  const defaultClassNames = getDefaultClassNames()

  return (
    <DayPicker
      showOutsideDays={showOutsideDays}
      className={cn(
        "bg-background group/calendar p-3 [--cell-size:--spacing(8)] [[data-slot=card-content]_&]:bg-transparent [[data-slot=popover-content]_&]:bg-transparent",
        String.raw`rtl:**:[.rdp-button\_next>svg]:rotate-180`,
        String.raw`rtl:**:[.rdp-button\_previous>svg]:rotate-180`,
        className
      )}
      captionLayout={captionLayout}
      formatters={{
        formatMonthDropdown: (date) =>
          date.toLocaleString("default", { month: "short" }),
        ...formatters,
      }}
      classNames={{
        root: cn("w-fit", defaultClassNames.root),
        months: cn(
          "flex gap-4 flex-col md:flex-row relative",
          defaultClassNames.months
        ),
        month: cn("flex flex-col w-full gap-4", defaultClassNames.month),
        nav: cn(
          "flex items-center gap-1 w-full absolute top-0 inset-x-0 justify-between",
          defaultClassNames.nav
        ),
        button_previous: cn(
          buttonVariants({ variant: buttonVariant }),
          "size-(--cell-size) aria-disabled:opacity-50 p-0 select-none",
          defaultClassNames.button_previous
        ),
        button_next: cn(
          buttonVariants({ variant: buttonVariant }),
          "size-(--cell-size) aria-disabled:opacity-50 p-0 select-none",
          defaultClassNames.button_next
        ),
        month_caption: cn(
          "flex items-center justify-center h-(--cell-size) w-full px-(--cell-size)",
          defaultClassNames.month_caption
        ),
        dropdowns: cn(
          "w-full flex items-center text-sm font-medium justify-center h-(--cell-size) gap-1.5",
          defaultClassNames.dropdowns
        ),
        dropdown_root: cn(
          "relative has-focus:border-ring border border-input shadow-xs has-focus:ring-ring/50 has-focus:ring-[3px] rounded-md",
          defaultClassNames.dropdown_root
        ),
        dropdown: cn("absolute inset-0 opacity-0", defaultClassNames.dropdown),
        caption_label: cn(
          "select-none font-medium",
          captionLayout === "label"
            ? "text-sm"
            : "rounded-md pl-2 pr-1 flex items-center gap-1 text-sm h-8 [&>svg]:text-muted-foreground [&>svg]:size-3.5",
          defaultClassNames.caption_label
        ),
        table: "w-full border-collapse",
        weekdays: cn("flex", defaultClassNames.weekdays),
        weekday: cn(
          "text-muted-foreground rounded-md flex-1 font-normal text-[0.8rem] select-none",
          defaultClassNames.weekday
        ),
        week: cn("flex w-full mt-2", defaultClassNames.week),
        week_number_header: cn(
          "select-none w-(--cell-size)",
          defaultClassNames.week_number_header
        ),
        week_number: cn(
          "text-[0.8rem] select-none text-muted-foreground",
          defaultClassNames.week_number
        ),
        day: cn(
          "relative w-full h-full p-0 text-center [&:first-child[data-selected=true]_button]:rounded-l-md [&:last-child[data-selected=true]_button]:rounded-r-md group/day aspect-square select-none",
          defaultClassNames.day
        ),
        range_start: cn(
          "rounded-l-md bg-accent",
          defaultClassNames.range_start
        ),
        range_middle: cn("rounded-none", defaultClassNames.range_middle),
        range_end: cn("rounded-r-md bg-accent", defaultClassNames.range_end),
        today: cn(
          "bg-accent text-accent-foreground rounded-md data-[selected=true]:rounded-none",
          defaultClassNames.today
        ),
        outside: cn(
          "text-muted-foreground aria-selected:text-muted-foreground",
          defaultClassNames.outside
        ),
        disabled: cn(
          "text-muted-foreground opacity-50",
          defaultClassNames.disabled
        ),
        hidden: cn("invisible", defaultClassNames.hidden),
        ...classNames,
      }}
      components={{
        Root: ({ className, rootRef, ...props }) => {
          return (
            <div
              data-slot="calendar"
              ref={rootRef}
              className={cn(className)}
              {...props}
            />
          )
        },
        Chevron: ({ className, orientation, ...props }) => {
          if (orientation === "left") {
            return (
              <ChevronLeftIcon className={cn("size-4", className)} {...props} />
            )
          }

          if (orientation === "right") {
            return (
              <ChevronRightIcon
                className={cn("size-4", className)}
                {...props}
              />
            )
          }

          return (
            <ChevronDownIcon className={cn("size-4", className)} {...props} />
          )
        },
        DayButton: CalendarDayButton,
        WeekNumber: ({ children, ...props }) => {
          return (
            <td {...props}>
              <div className="flex size-(--cell-size) items-center justify-center text-center">
                {children}
              </div>
            </td>
          )
        },
        ...components,
      }}
      {...props}
    />
  )
}

function CalendarDayButton({
  className,
  day,
  modifiers,
  ...props
}: React.ComponentProps<typeof DayButton>) {
  const defaultClassNames = getDefaultClassNames()

  const ref = React.useRef<HTMLButtonElement>(null)
  React.useEffect(() => {
    if (modifiers.focused) ref.current?.focus()
  }, [modifiers.focused])

  return (
    <Button
      ref={ref}
      variant="ghost"
      size="icon"
      data-day={day.date.toLocaleDateString()}
      data-selected-single={
        modifiers.selected &&
        !modifiers.range_start &&
        !modifiers.range_end &&
        !modifiers.range_middle
      }
      data-range-start={modifiers.range_start}
      data-range-end={modifiers.range_end}
      data-range-middle={modifiers.range_middle}
      className={cn(
        "data-[selected-single=true]:bg-primary data-[selected-single=true]:text-primary-foreground data-[range-middle=true]:bg-accent data-[range-middle=true]:text-accent-foreground data-[range-start=true]:bg-primary data-[range-start=true]:text-primary-foreground data-[range-end=true]:bg-primary data-[range-end=true]:text-primary-foreground group-data-[focused=true]/day:border-ring group-data-[focused=true]/day:ring-ring/50 dark:hover:text-accent-foreground flex aspect-square size-auto w-full min-w-(--cell-size) flex-col gap-1 leading-none font-normal group-data-[focused=true]/day:relative group-data-[focused=true]/day:z-10 group-data-[focused=true]/day:ring-[3px] data-[range-end=true]:rounded-md data-[range-end=true]:rounded-r-md data-[range-middle=true]:rounded-none data-[range-start=true]:rounded-md data-[range-start=true]:rounded-l-md [&>span]:text-xs [&>span]:opacity-70",
        defaultClassNames.day,
        className
      )}
      {...props}
    />
  )
}

选中日期(带时区)

Calendar 组件支持 timeZone 属性,用于确保日期在用户本地时区下显示与选择。

export function CalendarWithTimezone() {
  const [date, setDate] = React.useState<Date | undefined>(undefined)
  const [timeZone, setTimeZone] = React.useState<string | undefined>(undefined)
 
  React.useEffect(() => {
    setTimeZone(Intl.DateTimeFormat().resolvedOptions().timeZone)
  }, [])
 
  return (
    <Calendar
      mode="single"
      selected={date}
      onSelect={setDate}
      timeZone={timeZone}
    />
  )
}

注意: 如果出现选中日期偏移(例如选择 20 日却高亮 19 日),请确认 timeZone 已设置为用户本地时区。

为何在客户端检测? 时区通过 useEffect 内的 Intl.DateTimeFormat().resolvedOptions().timeZone 进行检测,以确保与服务端渲染兼容;若在渲染阶段检测,服务器与客户端不同时区会导致水合不一致。

示例

区间选择

June 2025
July 2025
"use client"

import * as React from "react"
import { type DateRange } from "react-day-picker"

import { Calendar } from "@/components/ui/calendar"

export function Calendar05() {
  const [dateRange, setDateRange] = React.useState<DateRange | undefined>({
    from: new Date(2025, 5, 12),
    to: new Date(2025, 6, 15),
  })

  return (
    <Calendar
      mode="range"
      defaultMonth={dateRange?.from}
      selected={dateRange}
      onSelect={setDateRange}
      numberOfMonths={2}
      className="rounded-lg border shadow-sm"
    />
  )
}

月份与年份选择

June 2025
"use client"

import * as React from "react"

import { Calendar } from "@/components/ui/calendar"
import { Label } from "@/components/ui/label"
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select"

export function Calendar13() {
  const [dropdown, setDropdown] =
    React.useState<React.ComponentProps<typeof Calendar>["captionLayout"]>(
      "dropdown"
    )
  const [date, setDate] = React.useState<Date | undefined>(
    new Date(2025, 5, 12)
  )

  return (
    <div className="flex flex-col gap-4">
      <Calendar
        mode="single"
        defaultMonth={date}
        selected={date}
        onSelect={setDate}
        captionLayout={dropdown}
        className="rounded-lg border shadow-sm"
      />
      <div className="flex flex-col gap-3">
        <Label htmlFor="dropdown" className="px-1">
          Dropdown
        </Label>
        <Select
          value={dropdown}
          onValueChange={(value) =>
            setDropdown(
              value as React.ComponentProps<typeof Calendar>["captionLayout"]
            )
          }
        >
          <SelectTrigger
            id="dropdown"
            size="sm"
            className="bg-background w-full"
          >
            <SelectValue placeholder="Dropdown" />
          </SelectTrigger>
          <SelectContent align="center">
            <SelectItem value="dropdown">Month and Year</SelectItem>
            <SelectItem value="dropdown-months">Month Only</SelectItem>
            <SelectItem value="dropdown-years">Year Only</SelectItem>
          </SelectContent>
        </Select>
      </div>
    </div>
  )
}

出生日期选择器

"use client"

import * as React from "react"
import { ChevronDownIcon } from "lucide-react"

import { Button } from "@/components/ui/button"
import { Calendar } from "@/components/ui/calendar"
import { Label } from "@/components/ui/label"
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover"

export function Calendar22() {
  const [open, setOpen] = React.useState(false)
  const [date, setDate] = React.useState<Date | undefined>(undefined)

  return (
    <div className="flex flex-col gap-3">
      <Label htmlFor="date" className="px-1">
        Date of birth
      </Label>
      <Popover open={open} onOpenChange={setOpen}>
        <PopoverTrigger asChild>
          <Button
            variant="outline"
            id="date"
            className="w-48 justify-between font-normal"
          >
            {date ? date.toLocaleDateString() : "Select date"}
            <ChevronDownIcon />
          </Button>
        </PopoverTrigger>
        <PopoverContent className="w-auto overflow-hidden p-0" align="start">
          <Calendar
            mode="single"
            selected={date}
            captionLayout="dropdown"
            onSelect={(date) => {
              setDate(date)
              setOpen(false)
            }}
          />
        </PopoverContent>
      </Popover>
    </div>
  )
}

日期与时间选择器

"use client"

import * as React from "react"
import { ChevronDownIcon } from "lucide-react"

import { Button } from "@/components/ui/button"
import { Calendar } from "@/components/ui/calendar"
import { Input } from "@/components/ui/input"
import { Label } from "@/components/ui/label"
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover"

export function Calendar24() {
  const [open, setOpen] = React.useState(false)
  const [date, setDate] = React.useState<Date | undefined>(undefined)

  return (
    <div className="flex gap-4">
      <div className="flex flex-col gap-3">
        <Label htmlFor="date-picker" className="px-1">
          Date
        </Label>
        <Popover open={open} onOpenChange={setOpen}>
          <PopoverTrigger asChild>
            <Button
              variant="outline"
              id="date-picker"
              className="w-32 justify-between font-normal"
            >
              {date ? date.toLocaleDateString() : "Select date"}
              <ChevronDownIcon />
            </Button>
          </PopoverTrigger>
          <PopoverContent className="w-auto overflow-hidden p-0" align="start">
            <Calendar
              mode="single"
              selected={date}
              captionLayout="dropdown"
              onSelect={(date) => {
                setDate(date)
                setOpen(false)
              }}
            />
          </PopoverContent>
        </Popover>
      </div>
      <div className="flex flex-col gap-3">
        <Label htmlFor="time-picker" className="px-1">
          Time
        </Label>
        <Input
          type="time"
          id="time-picker"
          step="1"
          defaultValue="10:30:00"
          className="bg-background appearance-none [&::-webkit-calendar-picker-indicator]:hidden [&::-webkit-calendar-picker-indicator]:appearance-none"
        />
      </div>
    </div>
  )
}

自然语言解析

该示例使用 chrono-node 库解析自然语言日期。

Your post will be published on December 05, 2025.
"use client"

import * as React from "react"
import { parseDate } from "chrono-node"
import { CalendarIcon } from "lucide-react"

import { Button } from "@/components/ui/button"
import { Calendar } from "@/components/ui/calendar"
import { Input } from "@/components/ui/input"
import { Label } from "@/components/ui/label"
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover"

function formatDate(date: Date | undefined) {
  if (!date) {
    return ""
  }

  return date.toLocaleDateString("en-US", {
    day: "2-digit",
    month: "long",
    year: "numeric",
  })
}

export function Calendar29() {
  const [open, setOpen] = React.useState(false)
  const [value, setValue] = React.useState("In 2 days")
  const [date, setDate] = React.useState<Date | undefined>(
    parseDate(value) || undefined
  )
  const [month, setMonth] = React.useState<Date | undefined>(date)

  return (
    <div className="flex flex-col gap-3">
      <Label htmlFor="date" className="px-1">
        Schedule Date
      </Label>
      <div className="relative flex gap-2">
        <Input
          id="date"
          value={value}
          placeholder="Tomorrow or next week"
          className="bg-background pr-10"
          onChange={(e) => {
            setValue(e.target.value)
            const date = parseDate(e.target.value)
            if (date) {
              setDate(date)
              setMonth(date)
            }
          }}
          onKeyDown={(e) => {
            if (e.key === "ArrowDown") {
              e.preventDefault()
              setOpen(true)
            }
          }}
        />
        <Popover open={open} onOpenChange={setOpen}>
          <PopoverTrigger asChild>
            <Button
              id="date-picker"
              variant="ghost"
              className="absolute top-1/2 right-2 size-6 -translate-y-1/2"
            >
              <CalendarIcon className="size-3.5" />
              <span className="sr-only">Select date</span>
            </Button>
          </PopoverTrigger>
          <PopoverContent className="w-auto overflow-hidden p-0" align="end">
            <Calendar
              mode="single"
              selected={date}
              captionLayout="dropdown"
              month={month}
              onMonthChange={setMonth}
              onSelect={(date) => {
                setDate(date)
                setValue(formatDate(date))
                setOpen(false)
              }}
            />
          </PopoverContent>
        </Popover>
      </div>
      <div className="text-muted-foreground px-1 text-sm">
        Your post will be published on{" "}
        <span className="font-medium">{formatDate(date)}</span>.
      </div>
    </div>
  )
}

自定义单元格尺寸

December 2025
"use client"

import * as React from "react"

import { Calendar } from "@/components/ui/calendar"

export function Calendar18() {
  const [date, setDate] = React.useState<Date | undefined>(
    new Date(2025, 5, 12)
  )

  return (
    <Calendar
      mode="single"
      selected={date}
      onSelect={setDate}
      className="rounded-lg border [--cell-size:--spacing(11)] md:[--cell-size:--spacing(12)]"
      buttonVariant="ghost"
    />
  )
}

可以通过 --cell-size CSS 变量控制单元格尺寸,并结合断点实现响应式效果:

<Calendar
  mode="single"
  selected={date}
  onSelect={setDate}
  className="rounded-lg border [--cell-size:--spacing(11)] md:[--cell-size:--spacing(12)]"
/>

也可以使用固定数值:

<Calendar
  mode="single"
  selected={date}
  onSelect={setDate}
  className="rounded-lg border [--cell-size:2.75rem] md:[--cell-size:3rem]"
/>

升级指南

Tailwind v4

如果你已经使用 Tailwind v4,可运行以下命令升级到最新版 Calendar 组件:

pnpm dlx shadcn@latest add calendar

当提示是否覆盖现有 Calendar 组件时,选择 Yes若你对组件做过修改,需要手动合并这些改动。

该命令会将 Calendar 组件与 react-day-picker 升级至最新版本。

之后请按照 React DayPicker 的升级指南更新现有组件。

安装 Blocks

升级完成后,可运行 shadcn@latest add 安装最新的日历 Blocks。

pnpm dlx shadcn@latest add calendar-02

上述命令会安装最新版的日历 Block。

Tailwind v3

若仍使用 Tailwind v3,可将以下代码复制到 calendar.tsx 中以升级 Calendar

components/ui/calendar.tsx
"use client"
 
import * as React from "react"
import {
  ChevronDownIcon,
  ChevronLeftIcon,
  ChevronRightIcon,
} from "lucide-react"
import { DayButton, DayPicker, getDefaultClassNames } from "react-day-picker"
 
import { cn } from "@/lib/utils"
import { Button, buttonVariants } from "@/components/ui/button"
 
function Calendar({
  className,
  classNames,
  showOutsideDays = true,
  captionLayout = "label",
  buttonVariant = "ghost",
  formatters,
  components,
  ...props
}: React.ComponentProps<typeof DayPicker> & {
  buttonVariant?: React.ComponentProps<typeof Button>["variant"]
}) {
  const defaultClassNames = getDefaultClassNames()
 
  return (
    <DayPicker
      showOutsideDays={showOutsideDays}
      className={cn(
        "bg-background group/calendar p-3 [--cell-size:2rem] [[data-slot=card-content]_&]:bg-transparent [[data-slot=popover-content]_&]:bg-transparent",
        String.raw`rtl:**:[.rdp-button\_next>svg]:rotate-180`,
        String.raw`rtl:**:[.rdp-button\_previous>svg]:rotate-180`,
        className
      )}
      captionLayout={captionLayout}
      formatters={{
        formatMonthDropdown: (date) =>
          date.toLocaleString("default", { month: "short" }),
        ...formatters,
      }}
      classNames={{
        root: cn("w-fit", defaultClassNames.root),
        months: cn(
          "relative flex flex-col gap-4 md:flex-row",
          defaultClassNames.months
        ),
        month: cn("flex w-full flex-col gap-4", defaultClassNames.month),
        nav: cn(
          "absolute inset-x-0 top-0 flex w-full items-center justify-between gap-1",
          defaultClassNames.nav
        ),
        button_previous: cn(
          buttonVariants({ variant: buttonVariant }),
          "h-[--cell-size] w-[--cell-size] select-none p-0 aria-disabled:opacity-50",
          defaultClassNames.button_previous
        ),
        button_next: cn(
          buttonVariants({ variant: buttonVariant }),
          "h-[--cell-size] w-[--cell-size] select-none p-0 aria-disabled:opacity-50",
          defaultClassNames.button_next
        ),
        month_caption: cn(
          "flex h-[--cell-size] w-full items-center justify-center px-[--cell-size]",
          defaultClassNames.month_caption
        ),
        dropdowns: cn(
          "flex h-[--cell-size] w-full items-center justify-center gap-1.5 text-sm font-medium",
          defaultClassNames.dropdowns
        ),
        dropdown_root: cn(
          "has-focus:border-ring border-input shadow-xs has-focus:ring-ring/50 has-focus:ring-[3px] relative rounded-md border",
          defaultClassNames.dropdown_root
        ),
        dropdown: cn("absolute inset-0 opacity-0", defaultClassNames.dropdown),
        caption_label: cn(
          "select-none font-medium",
          captionLayout === "label"
            ? "text-sm"
            : "[&>svg]:text-muted-foreground flex h-8 items-center gap-1 rounded-md pl-2 pr-1 text-sm [&>svg]:size-3.5",
          defaultClassNames.caption_label
        ),
        table: "w-full border-collapse",
        weekdays: cn("flex", defaultClassNames.weekdays),
        weekday: cn(
          "text-muted-foreground flex-1 select-none rounded-md text-[0.8rem] font-normal",
          defaultClassNames.weekday
        ),
        week: cn("mt-2 flex w-full", defaultClassNames.week),
        week_number_header: cn(
          "w-[--cell-size] select-none",
          defaultClassNames.week_number_header
        ),
        week_number: cn(
          "text-muted-foreground select-none text-[0.8rem]",
          defaultClassNames.week_number
        ),
        day: cn(
          "relative w-full h-full p-0 text-center [&:last-child[data-selected=true]_button]:rounded-r-md group/day aspect-square select-none",
          props.showWeekNumber
            ? "[&:nth-child(2)[data-selected=true]_button]:rounded-l-md"
            : "[&:first-child[data-selected=true]_button]:rounded-l-md",
          defaultClassNames.day
        ),
        range_start: cn(
          "bg-accent rounded-l-md",
          defaultClassNames.range_start
        ),
        range_middle: cn("rounded-none", defaultClassNames.range_middle),
        range_end: cn("bg-accent rounded-r-md", defaultClassNames.range_end),
        today: cn(
          "bg-accent text-accent-foreground rounded-md data-[selected=true]:rounded-none",
          defaultClassNames.today
        ),
        outside: cn(
          "text-muted-foreground aria-selected:text-muted-foreground",
          defaultClassNames.outside
        ),
        disabled: cn(
          "text-muted-foreground opacity-50",
          defaultClassNames.disabled
        ),
        hidden: cn("invisible", defaultClassNames.hidden),
        ...classNames,
      }}
      components={{
        Root: ({ className, rootRef, ...props }) => {
          return (
            <div
              data-slot="calendar"
              ref={rootRef}
              className={cn(className)}
              {...props}
            />
          )
        },
        Chevron: ({ className, orientation, ...props }) => {
          if (orientation === "left") {
            return (
              <ChevronLeftIcon className={cn("size-4", className)} {...props} />
            )
          }
 
          if (orientation === "right") {
            return (
              <ChevronRightIcon
                className={cn("size-4", className)}
                {...props}
              />
            )
          }
 
          return (
            <ChevronDownIcon className={cn("size-4", className)} {...props} />
          )
        },
        DayButton: CalendarDayButton,
        WeekNumber: ({ children, ...props }) => {
          return (
            <td {...props}>
              <div className="flex size-[--cell-size] items-center justify-center text-center">
                {children}
              </div>
            </td>
          )
        },
        ...components,
      }}
      {...props}
    />
  )
}
 
function CalendarDayButton({
  className,
  day,
  modifiers,
  ...props
}: React.ComponentProps<typeof DayButton>) {
  const defaultClassNames = getDefaultClassNames()
 
  const ref = React.useRef<HTMLButtonElement>(null)
  React.useEffect(() => {
    if (modifiers.focused) ref.current?.focus()
  }, [modifiers.focused])
 
  return (
    <Button
      ref={ref}
      variant="ghost"
      size="icon"
      data-day={day.date.toLocaleDateString()}
      data-selected-single={
        modifiers.selected &&
        !modifiers.range_start &&
        !modifiers.range_end &&
        !modifiers.range_middle
      }
      data-range-start={modifiers.range_start}
      data-range-end={modifiers.range_end}
      data-range-middle={modifiers.range_middle}
      className={cn(
        "data-[selected-single=true]:bg-primary data-[selected-single=true]:text-primary-foreground data-[range-middle=true]:bg-accent data-[range-middle=true]:text-accent-foreground data-[range-start=true]:bg-primary data-[range-start=true]:text-primary-foreground data-[range-end=true]:bg-primary data-[range-end=true]:text-primary-foreground group-data-[focused=true]/day:border-ring group-data-[focused=true]/day:ring-ring/50 flex aspect-square h-auto w-full min-w-[--cell-size] flex-col gap-1 font-normal leading-none data-[range-end=true]:rounded-md data-[range-middle=true]:rounded-none data-[range-start=true]:rounded-md group-data-[focused=true]/day:relative group-data-[focused=true]/day:z-10 group-data-[focused=true]/day:ring-[3px] [&>span]:text-xs [&>span]:opacity-70",
        defaultClassNames.day,
        className
      )}
      {...props}
    />
  )
}
 
export { Calendar, CalendarDayButton }

如果你对 Calendar 组件做过自定义,需要将这些改动与新版代码合并。

随后参考 React DayPicker 升级指南,更新依赖与现有组件。

安装 Blocks

升级完成后,可运行 shadcn@latest add 安装最新的 Block。

pnpm dlx shadcn@latest add calendar-02

该命令会安装最新版本的日历 Blocks。

更新日志

2025-10-26 修复周序列下的圆角

修复了在显示周序列时,选中日期左侧圆角未正确应用的问题。现在当 showWeekNumber 启用时,第一天(由于周序列列存在,实际为第二个子节点)能够正确获得左侧圆角。

要应用此修复,请编辑 components/ui/calendar.tsx 并更新 classNames 中的 day 类:

components/ui/calendar.tsx
classNames={{
  // ... other classNames
  day: cn(
    "relative w-full h-full p-0 text-center [&:last-child[data-selected=true]_button]:rounded-r-md group/day aspect-square select-none",
    props.showWeekNumber
      ? "[&:nth-child(2)[data-selected=true]_button]:rounded-l-md"
      : "[&:first-child[data-selected=true]_button]:rounded-l-md",
    defaultClassNames.day
  ),
  // ... other classNames
}}