LSIsDate

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

Date and time functions, Display and formatting functions, International functions

Function syntax

LSIsDate(string [, locale])

See also

CreateDateTime, GetLocale, IsNumericDate, LSDateFormat, ParseDateTime, SetLocale; Handling data in ColdFusion in the Developing ColdFusion Applications

History

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

string

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

<h3>LSIsDate Example</h3> 
<cfif IsDefined("FORM.locale")> 
    <!--- if locale is defined, set locale to that entry ---> 
    <cfset NewLocale = SetLocale(FORM.locale)> 
    <p>Is the value "<cfoutput>#FORM.myValue#</cFOUTPUT>" a proper date  
    value for <cfoutput>#GetLocale()#</cfoutput>? 
    <p>Answer: <cfoutput>#LSIsDate(FORM.myValue)#</cfoutput> 
</cfif> 
<p><form action = "LSIsDate.cfm"> 
<p>Select a locale for which you would like to check a date value: 
<!--- check the current locale for server ---> 
<cfset serverLocale = GetLocale()>