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IsDate

Determines whether a string or Java object can be converted to a date/time value.

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."

Date and time functions, Decision functions 

IsDate(string)

CreateDateTime, IsNumericDate, LSDateFormat, LSIsDate, ParseDateTime

Parameter

Description

string

A string or a variable that contains one.

This function checks against U.S. date formats only. For other date support, see LSDateFormat.

A date/time object falls in the range 100 AD-9999 AD.

<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>
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