dateAdd

Adds units of time to a date.

dateAdd(datepart, number, date) → returns date

Member Function Syntax

date.add(datepart, number)

Argument Reference

datepart string
Required

yyyy - Yearq - Quarterm - Monthy - Day of yeard - Dayw - Week dayww - Weekh - Hourn - Minutes - Secondl - Millisecond

Values:

yyyy
q
m
y
d
w
ww
h
n
s
l

number numeric
Required

The number of datepart units to add to the provided date. Number must be an integer. Negative integers move the date into the past, positive into the future.

date date
Required

A datetime object in the range of 100AD-9999AD. NOTE: When passing a datetime object as a string, enclose it in quotation marks. Otherwise, it is interpreted as a numeric representation of a datetime object.

Compatibility

ColdFusion:

Member function is available in CF11+.

Lucee:

Member function is available in Lucee4.5+

Examples
Sample code invoking the dateAdd function

Add Days to a Date

Add 30 days to August 3rd, 2014.

dateAdd('d', 30, '8/3/2014')

Expected Result: {ts '2014-09-02 00:00:00'}

Subtract Days from a Date

Subtract 30 days from August 3rd, 2014.

dateAdd('d', -30, '8/3/2014')

Expected Result: {ts '2014-07-04 00:00:00'}

Add Weeks to a Date

Here we're adding 8 weeks to the date August 3rd, 2014.

dateAdd('ww', 8, '8/3/2014')

Expected Result: {ts '2014-09-28 00:00:00'}

Add Days to a Date (Member Function)

Here we're adding 1 day to the current date/time.

createDate( 2022, 10, 1 ).add( 'd', 1 )

Expected Result: {ts '2022-10-02 00:00:00'}

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Licensed under the MIT License.
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https://cfdocs.org/dateadd