Determines the value of a character.

The value of the first character of a string; if string is empty, returns zero.

String functions

Asc(string)

Chr

ColdFusion MX: Changed Unicode support: ColdFusion supports the Java UCS-2 representation of Unicode characters, up to a value of 65536. (Earlier releases supported 1-255.)

<h3>Asc Example</h3>
<!--- if the character string is not empty, output its ASCII value --->
<cfif IsDefined("FORM.charVals")>

   <cfif FORM.charVals is not "">
      <cfoutput>#Left(FORM.charVals,1)# = 
     #Asc(FORM.charVals)#</cfoutput>
   <cfelse>
<!--- if it is empty, output an error message --->
      <h4>Enter a character</h4>
   </cfif>
</cfif>

<form action = "asc.cfm" method=post>
<p>Enter a character to see its ASCII value
<br><input type = "Text" name = "CharVals" size = "1" maxlength = "1">
<p><input type = "Submit" name = ""> <input type = "RESET">
</form>