<html>
<head>
<script type="text/javascript">
/*
Javascript credit card number generator
Copyright (C) 2006 Graham King graham@darkcoding.net
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
www.darkcoding.net
*/
var visaPrefixList = new Array(
"4539",
"4556",
"4916",
"4532",
"4929",
"40240071",
"4485",
"4716",
"4"
);
var mastercardPrefixList = new Array(
"51",
"52",
"53",
"54",
"55"
);
var amexPrefixList = new Array(
"34",
"37"
);
var discoverPrefixList = new Array("6011");
var dinersPrefixList = new Array(
"300",
"301",
"302",
"303",
"36",
"38"
);
var enRoutePrefixList = new Array(
"2014",
"2149"
);
var jcbPrefixList16 = new Array(
"3088",
"3096",
"3112",
"3158",
"3337",
"3528"
);
var jcbPrefixList15 = new Array(
"2100",
"1800"
);
var voyagerPrefixList = new Array("8699");
function strrev(str) {
if (!str) return '';
var revstr='';
for (i = str.length-1; i>=0; i--)
revstr+=str.charAt(i)
return revstr;
}
/*
'prefix' is the start of the CC number as a string, any number of digits.
'length' is the length of the CC number to generate. Typically 13 or 16
*/
function completed_number(prefix, length) {
var ccnumber = prefix;
// generate digits
while ( ccnumber.length < (length - 1) ) {
ccnumber += Math.floor(Math.random()*10);
}
// reverse number and convert to int
var reversedCCnumberString = strrev( ccnumber );
var reversedCCnumber = new Array();
for ( var i=0; i < reversedCCnumberString.length; i++ ) {
reversedCCnumber[i] = parseInt( reversedCCnumberString.charAt(i) );
}
// calculate sum
var sum = 0;
var pos = 0;
while ( pos < length - 1 ) {
odd = reversedCCnumber[ pos ] * 2;
if ( odd > 9 ) {
odd -= 9;
}
sum += odd;
if ( pos != (length - 2) ) {
sum += reversedCCnumber[ pos +1 ];
}
pos += 2;
}
// calculate check digit
var checkdigit = (( Math.floor(sum/10) + 1) * 10 - sum) % 10;
ccnumber += checkdigit;
return ccnumber;
}
function credit_card_number(prefixList, length, howMany) {
var result = new Array();
for (var i = 0; i < howMany; i++) {
var randomArrayIndex = Math.floor(Math.random() * prefixList.length);
var ccnumber = prefixList[ randomArrayIndex ];
result.push( completed_number(ccnumber, length) );
}
return result;
}</script>
</head>
<body>
<h3>VISA:</h3>
<script>
var visa = credit_card_number(visaPrefixList, 16, 5);
document.write( visa );
</script>
<h3>Amex:</h3>
<script>
var amex = credit_card_number(amexPrefixList, 15, 5);
document.write( amex );
</script>
<h3>Mastercard:</h3>
<script>
var mastercard = credit_card_number(mastercardPrefixList, 16, 5);
document.write( mastercard );
</script>
<h3>Discover:</h3>
<script>
var discover = credit_card_number(discoverPrefixList, 16, 5 );
document.write( discover );
</script>
</body>
</html>