UserAgent detector

gistfile1.txt

var userAgent = navigator.userAgent,
    uaCheck = {
      ios: userAgent.match(/(iPhone|iPod|iPad)/),
      ipad: userAgent.match(/(iPad)/),
      iphone: userAgent.match(/(iPhone)/),
      blackberry: userAgent.match(/BlackBerry/),
      android: userAgent.match(/Android/)
    };

// Example
if (uaCheck.ios || uaCheck.blackberry || uaCheck.android) {
  console.log('mobile');
} else {
  console.log('not mobile');
}