ColdFusion 9.0 Resources

Asc

Description

Determines the value of a character.

Returns

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

Function syntax

Asc(string)

History

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.)

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

Asc