Check Firefox OS version

ffos-check

function getVersion() {
     if (navigator.userAgent.match(/(mobile|tablet)/i)) {
         var ffVersionArray = (navigator.userAgent.match(/Firefox\/([\d]+\.[\w]?\.?[\w]+)/));
         if (ffVersionArray.length === 2) {
             //Check with the gecko version the Firefox OS version
             //Table https://developer.mozilla.org/en-US/docs/Gecko_user_agent_string_reference
             var hashVersion = {
                 '18.0': '1.0.1',
                 '18.1': '1.1',
                 '26.0': '1.2',
                 '28.0': '1.3',
                 '30.0': '1.4',
                 '32.0': '1.5'
             }
             var rver = ffVersionArray[1];
             var sStr = ffVersionArray[1].substring(0, 4);
             if (hashVersion[sStr]) {
                 rver = hashVersion[sStr];
             }
             return rver;
         }
     }
     return (null); 
}

//Return the version of Firefox OS or null if not Firefox OS
//The simulator use the gecko version of the browser!

As it was said, Firefox OS 1.5 never existed, and new versions are not covered.

Following code snippet should fix that.

// Taken from https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent/Firefox#Firefox_OS_version_number
var hashVersion = {
  '18.0': '1.0.1',
  '18.1': '1.1',
  '26.0': '1.2',
  '28.0': '1.3',
  '30.0': '1.4',
  '32.0': '2.0',
  '34.0': '2.1',
  '37': '2.2',
  '44': '2.5'
};