CFML Reference
ColdFusion Functions

Asc

Description

Determines the value of a character.

Return value

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

Category

String functions

Syntax

Asc(string)

See also

Chr

History

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

Parameters

Parameter	Description
string	A string

Example

<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">
<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>

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