hpwOS)[\s\/]([\d.]+)/),
touchpad = webos && ua.match(/TouchPad/),
kindle = ua.match(/Kindle\/([\d.]+)/),
silk = ua.match(/Silk\/([\d._]+)/),
blackberry = ua.match(/(BlackBerry).*Version\/([\d.]+)/),
bb10 = ua.match(/(BB10).*Version\/([\d.]+)/),
rimtabletos = ua.match(/(RIM\sTablet\sOS)\s([\d.]+)/),
playbook = ua.match(/PlayBook/),
chrome = ua.match(/Chrome\/([\d.]+)/)
关键词：zepto是啥