//js判断当前移动设备平台
var isiOs = false;
var isAndroid = false;
var isWindowsPhone = false;
if(/(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent)) {
isiOS = true;
} else if(/(Android)/i.test(navigator.userAgent)) {
isAndroid = true;
} else if(/(Windows Phone)/i.test(navigator.userAgent)) {
isWindowsPhone = true;
}