js区分设备

  var sUserAgent = navigator.userAgent.toLowerCase();
      var bIsIpad = sUserAgent.match(/ipad/i) == "ipad";
      var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";
      var bIsMidp = sUserAgent.match(/midp/i) == "midp";
      var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";
      var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";
      var bIsAndroid = sUserAgent.match(/android/i) == "android";
      var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";
      var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile";
      console.log("您的浏览设备为：");
      if (
        bIsIpad ||
        bIsIphoneOs ||
        bIsMidp ||
        bIsUc7 ||
        bIsUc ||
        bIsAndroid ||
        bIsCE ||
        bIsWM
      ) {
        console.log("phone");
      } else {
        console.log("pc");
      }