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LSIsDate
Last update:
May 18, 2026
Description
Determines whether a string is a valid representation of a date/time value in the current locale.
Returns
True, if the string can be formatted as a date/time value in the current locale; False, otherwise.
Category
Syntax
LSIsDate(date [, locale])See also
CreateDateTime, GetLocale, IsNumericDate, LSDateFormat, ParseDateTime, SetLocale; Handling data in ColdFusion in the Developing ColdFusion Applications
History
ColdFusion (2018 release): Introduced named parameters.
ColdFusion 8: Added the locale parameter.
ColdFusion MX:
- Changed formatting behavior: this function might return a different result than in earlier releases. This function uses Java standard locale formatting rules on all platforms.
- Changed behavior: this function accepts a dash or hyphen character only in the Dutch(Standard) and Portuguese (Standard) locales. If called this way (for example, LsIsDate("3-1-2002") in any other locale, this function returns False. (Earlier releases returned True.)
- Changed behavior: when using the SUN JRE 1.3.1 on an English(UK) locale, this function returns False for a date that has a one-digit month or day (for example, 1/1/01). To work around this, insert a zero in a one-digit month or day (for example, 01/01/01).
Parameters
Parameter | Description |
date | A string or a variable that contains one |
locale | Locale to use instead of the locale of the page when processing the function |
Usage
A date/time object is in the range 100 AD-9999 AD.To set the default display format of date, time, number, and currency values, use the SetLocale function.
Example
<cfscript>
date="10-16-2018"
locale=getLocale()
writeOutput("Locale is: " & locale & "<br/>")
writeOutput(LSISDate(date,locale))
</cfscript>Output
Locale is: English (US)
NO
NO
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