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).*OSs([d_]+)/), iphone = !ipad && ua.match(/(iPhonesOS)s([d_]+)/), webos = ua.match(/(webOS|hpwOS)[s/]([d.]+)/), touchpad = webos && ua.match(/TouchPad/), kindle = ua.match(/Kindle/([d.]+)/), silk = ua.match(/Silk/([d._]+)/), blackberry = ua.match(/(BlackBerry).*Version/([d.]+)/) // todo clean this up with a better OS/browser // separation. we need to discern between multiple // browsers on android, and decide if kindle fire in // silk mode is android or not 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] if (kindle) os.kindle = true, os.version = kindle[1] if (silk) browser.silk = true, browser.version = silk[1] if (!silk && os.android && ua.match(/Kindle Fire/)) browser.silk = true }
zepto 里的终端判断