JavaScript随机生成信用卡卡号的方法_javascript技巧

本文实例讲述了JavaScript随机生成信用卡卡号的方法。分享给大家供大家参考。具体分析如下：

这段JS代码根据信用卡卡号产生规则随机生成信用卡卡号，是可以通过验证的，仅供学习参考，请不要用于非法用途，否则后果自负。

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 jcbPrefixList = new Array(
 "35"
);
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  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 

调用方法：

将上面的代码保存为gencc.js文件

VISA:
Amex:

希望本文所述对大家的javascript程序设计有所帮助。