Evaluates whether a real number is a valid representation of a date (date/time object).
True, if the parameter represents a valid date/time object; False, otherwise.
Date and time functions, Decision functions
IsNumericDate(number
)
Parameter |
Description |
---|---|
number |
A real number |
ColdFusion, by default, evaluates any input parameter and attempts to convert it to a real number before it passes the parameter to the IsNumericDate function. As a result, parameter values such as 12/12/03 and {ts '2003-01-14 10:04:13'} return True, because ColdFusion converts valid date string formats to date/time objects, which are real numbers.
<h3>IsNumericDate Example</h3> <cfif IsDefined("form.theTestValue")> <!--- test if the value represents a number or a pre-formatted Date value ---> <cfif IsNumeric(form.theTestValue) or IsDate(form.theTestValue)> <!--- if this value is a numericDate value, then pass ---> <cfif IsNumericDate(form.theTestValue)> <h3>The string <cfoutput>#DE(form.theTestValue)#</cfoutput> can be converted to a valid numeric date</h3> <cfelse> <h3>The string <cfoutput>#DE(form.theTestValue)#</cfoutput> can not be converted to a valid numeric date</h3> </cfif> <cfelse> <h3>The string <cfoutput>#DE(form.theTestValue)#</cfoutput> is not a valid numeric date</h3> </cfif> </cfif> <form action="#cgi.script_name#" method="POST"> <p>Enter a value, and discover if 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>