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JavaScript functions to get browser name & version

Common javascript functions to get browser name & version, I post here primarily for my own benefit as I always forget the syntax each time I need it.

Get Browser Name 
function getBrowser() {
 var userAgent = navigator.userAgent.toLowerCase();
 if (/webkit/.test( userAgent )) {
  return "safari";
 }
 if (/opera/.test( userAgent )) {
  return "opera";
 }
 if (/msie/.test( userAgent ) && !/opera/.test( userAgent )) {
  return "msie";
 }
 if (/mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )) {
  return "mozilla";
 }
};

Get Browser Version 
function getBrowserVersion() {
 var userAgent = navigator.userAgent.toLowerCase();
 return (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [])[1];
};

Get Browser Type 
function(){ 
 
var isIE11 = function(){
    var userAgent = navigator.userAgent.toLowerCase();
    return (!$.browser.msie) && (userAgent.indexOf("trident") > 0);
  };
  
  var browserType = 0;
  
  if($.browser.msie || isIE11()) {
   browserType = 3;
  } else if($.browser.mozilla && !isIE11()) {
   browserType = 2;
  } else if($.browser.safari) {
   browserType = 1;
  } else if($.browser.opera) {
   browserType = 4;
  };
  
  return browserType;
 }
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