CFLib.org – Common Function Library Project

Description:
Verifies each characters in a string to be numeric. The existing isNumeric() function accepts e (express scientific notation) and d (denote double precision) as numeric characters and will return true/yes.

Return Values:
Returns a boolean.

Example:

<cfoutput>
isTrueNumeric():<br>
333e3: #isTrueNumeric('333e3')#<br>
333d3: #isTrueNumeric('333d3')#<br>
33333: #isTrueNumeric('33333')#<br><br>
isNumeric():<br>
333e3: #isNumeric('333e3')#<br>
333d3: #isNumeric('333d3')#<br>
33333: #isNumeric('33333')#
</cfoutput>

Parameters:

Full UDF Source:

/**
 * Returns true if all characters in a string are numeric.
 * Version 2 by Raymond Camden
 * 
 * @param str      Value to check. (Required)
 * @return Returns a boolean. 
 * @author Tomas Becklin (tomasbecklin@gmail.com) 
 * @version 2, August 18, 2005 
 */
function isTrueNumeric(str) {
    return reFind("[^0-9]", str) is 0;
}