CFLib.org – Common Function Library Project

Description:
getRandString is an easy-to-use random string generator. Pass it a integer, and it returns a random alphanumeric string of the specified length.

Return Values:
Returns a string.

Example:

<cfoutput>#getRandString(15)#</cfoutput>

Parameters:

Full UDF Source:

/**
 * Returns a random alphanumeric string of a user-specified length.
 * 
 * @param stringLenth      Length of random string to generate. (Required)
 * @return Returns a string. 
 * @author Kenneth Rainey (kip.rainey@incapital.com) 
 * @version 1, February 3, 2004 
 */
function getRandString(stringLength) {
    var tempAlphaList = "a|b|c|d|e|g|h|i|k|L|m|n|o|p|q|r|s|t|u|v|w|x|y|z";
    var tempNumList = "1|2|3|4|5|6|7|8|9|0";
    var tempCompositeList = tempAlphaList&"|"&tempNumList;
    var tempCharsInList = listLen(tempCompositeList,"|");
    var tempCounter = 1;
    var tempWorkingString = "";
    
    //loop from 1 to stringLength to generate string
    while (tempCounter LTE stringLength) {
        tempWorkingString = tempWorkingString&listGetAt(tempCompositeList,randRange(1,tempCharsInList),"|");
        tempCounter = tempCounter + 1;
    }
    
    return tempWorkingString;
}