如何识别设备类型，Phone， Tablet(Pad) 和 Desktop ? about detector HOT 7 OPEN

                var iosVersioin;
                if (detector.device.name == "iphone") {
                    var height = screen.height;
                    if (height == 480) {
                        iosVersioin = "4、4s"
                    } else {
                        if (height == 568) {
                            iosVersioin = "5、5s、5c"
                        } else {
                            if (height == 667) {
                                if(window.devicePixelRatio == 3){
                                    iosVersioin = '6 plus';
                                }else{
                                    iosVersioin = "6"
                                }

                            } else {
                                if (height == 736) {
                                    iosVersioin = "6 plus"
                                } else {
                                    iosVersioin = "unkown"
                                }
                            }
                        }
                    }
                }