Isdate - MACROMEDIA COLDFUSION MX 61-CFML Reference

IsDate

Description
Determines whether a string or Java object can be converted to a date/time value.
Returns
True, if string can be converted to a date/time value; otherwise, False. ColdFusion converts the
Boolean return value to its string equivalent, "Yes" or "No."
Category
Date and time functions,
Function syntax
IsDate(string)
See also
CreateDateTime, IsNumericDate, LSDateFormat, LSIsDate,
Parameters
Parameter
string
Usage
This function checks against U.S. date formats only. For other date support, see
A date/time object falls in the range 100 AD–9999 AD.
Example
<h3>IsDate Example</h3>
<cfif IsDefined("FORM.theTestValue")>
<cfif IsDate(FORM.theTestValue)>
<h3>The string <cfoutput>#DE(FORM.theTestValue)#</cfoutput>
is a valid date</h3>
<cfelse>
<h3>The string <cfoutput>#DE(FORM.theTestValue)#</cfoutput>
is not a valid date</h3>
</cfif>
</cfif>
<form action = "isDate.cfm">
<p>Enter a string, find whether it can be evaluated to a date value.
<p><input type = "Text" name = "TheTestValue" value = "<cfoutput>#Now()#
</cfoutput>">
<input type = "Submit" value = "Is it a Date?" name = "">
</form>
Decision functions
Description
A string or a variable that contains one.
ParseDateTime
LSDateFormat
IsDate
.
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