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; False, otherwise. ColdFusion converts the Boolean return value to its string equivalent, "Yes" or "No."
Category Date and time functions, Decision functions
Function syntax
    IsDate(string)
See also CreateDateTime, IsNumericDate, IsValid, LSDateFormat, LSIsDate, ParseDateTime
Parameters
Usage 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.
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>

STRING |

A string or a variable that contains one.