User Guide
Chapter 2: ColdFusion Functions 275
Asc
Returns the ASCII value (character code) of the first character of a string. Returns 0 if
string is empty.
See also Chr.
Syntax Asc(
string
)
string
Any string.
Examples <!--- 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, then
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>