记录华为鸿蒙系统中的userAgent输出和判断华为和小米手机的方法

当我们执行：

navigator.userAgent.toLowerCase()

在微信中：

mozilla/5.0 (linux; android 12; jad-al00 build/huaweijad-al00; wv) 
applewebkit/537.36 (khtml, like gecko) version/4.0 
chrome/86.0.4240.99 xweb/4375 mmwebsdk/20221012 mobile 
safari/537.36 mmwebid/8647 
micromessenger/8.0.30.2260(0x28001e55) wechat/arm64 weixin 
nettype/wifi language/zh_cn abi/arm64

在华为默认的浏览器中：

mozilla/5.0 (linux; android 12; harmonyos; jad-al00; hmscore 6.8.0.332) 
applewebkit/537.36 (khtml, like gecko) chrome/99.0.4844.88 
huaweibrowser/13.0.0.310 mobile safari/537.36

另记录匹配是否是华为或者小米手机的方法：

   function judgeBrand(sUserAgent) {
       var isIphone = sUserAgent.match(/iphone/i) == "iphone";
       var isHuawei = sUserAgent.match(/huawei/i) == "huawei";
       var isHonor = sUserAgent.match(/honor/i) == "honor";
       var isOppo = sUserAgent.match(/oppo/i) == "oppo";
       var isOppoR15 = sUserAgent.match(/pacm00/i) == "pacm00";
       var isVivo = sUserAgent.match(/vivo/i) == "vivo";
       var isXiaomi = sUserAgent.match(/mi\s/i) == "mi ";
       var isXiaomi2s = sUserAgent.match(/mix\s/i) == "mix ";
       var isRedmi = sUserAgent.match(/redmi/i) == "redmi";
       var isSamsung = sUserAgent.match(/sm-/i) == "sm-";

       if (isIphone) {
           return 'iphone';
       } else if (isHuawei || isHonor) {
           return 'huawei';
       } else if (isOppo || isOppoR15) {
           return 'oppo';
       } else if (isVivo) {
           return 'vivo';
       } else if (isXiaomi || isRedmi || isXiaomi2s) {
           return 'xiaomi';
       } else if (isSamsung) {
           return 'samsung';
       } else {
           return 'default';
       }
   }
   
   var brand = judgeBrand(navigator.userAgent.toLowerCase()); //调用机型判断
   ///使用navigator.userAgent.toLowerCase()判断登陆端是pc还是手机