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ColdFusion Functions


Asc

Description

Returns the ASCII value (character code) of the first character of a string. Returns 0 if string is empty.

Category

String functions

Syntax 

Asc(string)

See also

Chr

Parameters

Parameter
Description
string
 A string

Example 

<!--- This code illustrates ASC --->
<html>
<head>
<title>
Asc Example
</title>
</head>

<body bgcolor = silver>
<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>Please enter a character</H4>
  </cfif>
</cfif>

<form action = "asc.cfm" method = "POST">
<P>Type in 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>

</body>
</html>
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