var u = navigator.userAgent;
      var isAndroid = u.indexOf("Android") > -1 || u.indexOf("Linux") > -1; 
      //android终端
      var isIOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
      //android端
      if (isAndroid) {
        let hidden =
          window.document.hidden ||
          window.document.mozHidden ||
          window.document.msHidden ||
          window.document.webkitHidden;
        if (typeof hidden == "undefined" || hidden == false) {
          window.location.href = "https://www.xxxxxx.com"; //安卓应用市场地址
        }
      } else if (isIOS) {
        //ios端
        let hidden =
          window.document.hidden ||
          window.document.mozHidden ||
          window.document.msHidden ||
          window.document.webkitHidden;
        if (typeof hidden == "undefined" || hidden == false) {
          window.location.href = "https://www.xxxxxx.com"; //app store地址
        }
      }