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; otherwise, False. 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, LSDateFormat, LSIsDate, ParseDateTime
|
|
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">
<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>
|