Credit Card Expiry Date Regex Validator

credit-card-expiry-date-regex-validator.html

<!--
  Allow these formats 
  - m/YY
  - mm/YY
  - m/YYYY
  - mm/YYYY
  - month 1-12
  - year > 14 && year < 2099
  
  http://jsfiddle.net/GhxKx/4/
-->
<ul id="testResults"></ul>

credit-card-expiry-date-regex-validator.js

var testCases = ["1/18","09/22","99/99","asd","a/bb","0/10","05/13","3/96","as/ds", "00/19","10/990","09/2017"];

var pattern = new RegExp("^(0[1-9]|1[0-2]|[1-9])\/(1[4-9]|[2-9][0-9]|20[1-9][1-9])$");
var result;
for(var i = 0; i < testCases.length; i++)
{
    result = pattern.test(testCases[i]) ? "<span style='color:green'>Pass : " + testCases[i] + '</span>' 
                                        : "<span style='color:red'>Fails : " + testCases[i] + '</span>';   
    document.getElementById("testResults").innerHTML += "<li>"+ result + "</li>";
}