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!

Firefox OS 1.5 does not exist. It has become 2.0.

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'
};