detect.js

//     Zepto.js
//     (c) 2010-2012 Thomas Fuchs
//     Zepto.js may be freely distributed under the MIT license.

;(function($){
  function detect(ua){
    var os = this.os = {}, browser = this.browser = {},
      webkit = ua.match(/WebKit\/([\d.]+)/),
      android = ua.match(/(Android)\s+([\d.]+)/),
      ipad = ua.match(/(iPad).*OS\s([\d_]+)/),
      iphone = !ipad && ua.match(/(iPhone\sOS)\s([\d_]+)/),
      webos = ua.match(/(webOS|hpwOS)[\s\/]([\d.]+)/),
      touchpad = webos && ua.match(/TouchPad/),
      blackberry = ua.match(/(BlackBerry).*Version\/([\d.]+)/)

    if (browser.webkit = !!webkit) browser.version = webkit[1]

    if (android) os.android = true, os.version = android[2]
    if (iphone) os.ios = os.iphone = true, os.version = iphone[2].replace(/_/g, '.')
    if (ipad) os.ios = os.ipad = true, os.version = ipad[2].replace(/_/g, '.')
    if (webos) os.webos = true, os.version = webos[2]
    if (touchpad) os.touchpad = true
    if (blackberry) os.blackberry = true, os.version = blackberry[2]
  }

  detect.call($, navigator.userAgent)
  // make available to unit tests
  $.__detect = detect

})(Zepto)