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

Syntax

IsDate(string)

See also

Parameters

Parameter

Description

string

A string or a variable that contains one.

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" method="post"> 
<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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