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>