IsDate

Returns TRUE if string can be converted to a date/time value; otherwise, FALSE. Note that ColdFusion converts the Boolean return value to its string equivalent, "Yes" and "No."

See also ParseDateTime, CreateDateTime, and IsNumericDate.

Syntax

IsDate(string)

string

Any string value.

Usage

Years less than 100 are interpreted as 21^st century values.

Examples

<!--- This example shows the use of IsDate --->
<HTML>
<HEAD>
<TITLE>
IsDate Example
</TITLE>
</HEAD>

<BODY bgcolor=silver>
<H3>IsDate Example</H3>

<CFIF IsDefined("FORM.theTestValue")>
    <CFIF IsDate(FORM.theTestValue)>
    <H3>The string <CFOUTPUT>#FORM.theTestValue#</CFOUTPUT> 
      is a valid date</H3>
    <CFELSE>
    <H3>The string <CFOUTPUT>#FORM.theTestValue#</CFOUTPUT> 
      is not a valid date</H3>
    </CFIF>
</CFIF>

<FORM ACTION="isDate.cfm" METHOD="POST">
<P>Enter a string, 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>

</BODY>
</HTML>