Day.js
Docs
GitHub
English
中文
Русский
Español
Help Translate
›
Display
Installation
Installation
Node.js
Browser
TypeScript
Download
Parse
Parse
Now
String
String + Format
Unix Timestamp (milliseconds)
Unix Timestamp (seconds)
Date
Object
Array
UTC
Dayjs Clone
Validation
Get + Set
Get + Set
Millisecond
Second
Minute
Hour
Date of Month
Day of Week
Day of Week (Locale Aware)
ISO Day of Week
Day of Year
Week of Year
Week of Year (ISO)
Month
Quarter
Year
Week Year
Week Year (ISO)
Weeks In Year (ISO)
Get
Set
Maximum
Minimum
Manipulate
Manipulate
Add
Subtract
Start of Time
End of Time
Local
UTC
UTC offset
Display
Display
Format
Time from now
Time from X
Time to now
Time to X
Calendar Time
Difference
Unix Timestamp (milliseconds)
Unix Timestamp
Days in Month
As Javascript Date
As Array
As JSON
As ISO 8601 String
As Object
As String
Query
Query
Is Before
Is Same
Is After
Is Same or Before
Is Same or After
Is Between
Is a Dayjs
Is Leap Year
i18n
i18n
Loading locale in NodeJS
Loading locale in the browser
Changing locale globally
Changing locales locally
Checking the current Day.js locale
Listing the months and weekdays of the current locale
Accessing locale specific functionality
Plugins
Plugin
Loading plugin in NodeJS
Loading plugin in the browser
AdvancedFormat
ArraySupport
BadMutable
BigIntSupport
BuddhistEra
Calendar
CustomParseFormat
DayOfYear
DevHelper
Duration
IsBetween
IsLeapYear
IsSameOrAfter
IsSameOrBefore
IsToday
IsTomorrow
IsYesterday
IsoWeek
IsoWeeksInYear
LocaleData
LocalizedFormat
MinMax
ObjectSupport
PluralGetSet
PreParsePostFormat
QuarterOfYear
RelativeTime
Timezone
ToArray
ToObject
UpdateLocale
UTC
weekOfYear
WeekYear
Weekday
Customize
Customize
Month Names
Month Abbreviations
Weekday Names
Weekday Abbreviations
Minimal Weekday Abbreviations
Relative Time
Calendar
Durations
Durations
Creating
Clone
Humanize
Format
Milliseconds
Seconds
Minutes
Hours
Days
Weeks
Months
Years
Add Time
Subtract Time
Using Duration with Diff
As Unit of Time
Get Unit of Time
As JSON
Is a Duration
As ISO 8601 String
Locale
Time Zone
Time Zone
Parsing in Zone
Converting to Zone
Guessing user zone
Set Default Timezone
Edit
Days in Month
Get the number of days in the current month.
dayjs(
'2019-01-25'
).daysInMonth()
// 31
←
Unix Timestamp
As Javascript Date
→
