判断设备类型

//判断设备类型
          var u = navigator.userAgent, app = navigator.appVersion;
          var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Linux') > -1; //
          var isIOS = !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
          if (isAndroid) {
              //点击返回键
              $("#goBack").click(function () {
                  window.history.back();
              })
          } else if (isIOS) {
//          alert("isIOS");
              iosGoBack();
          } else {

          }
https://blog.csdn.net/weixin_37806077/article/details/84939337