判断手机端获取哪种类型的手机系统-安卓-ios

判断手机端获取哪种类型的手机系统-安卓-ios
<!-- 第一种方法跳转 -->
<script language="javascript">
  var ua = navigator.userAgent.toLowerCase();
  if (/iphone|ipad|ipod/.test(ua)) {
    //alert("iphone");
    window.location.href = "http://www.runoob.com/js/js-popup.html";
  } else if (/android/.test(ua)) {
    window.location.href = "https://www.baidu.com/";
    // alert("android");
  }
</script>
<!-- 第二种方法跳转 -->
<script>
  var browser = {
    versions: function() {
      var u = navigator.userAgent,
        app = navigator.appVersion;
      return {
        android: u.indexOf("Android") > -1 || u.indexOf("Linux") > -1,
        iPhone: u.indexOf("iPhone") > -1,
        iPad: u.indexOf("iPad") > -1,
        iPod: u.indexOf("iPod") > -1,
      };
    }(),
    language: (navigator.browserLanguage || navigator.language).toLowerCase()
  }
  if (browser.versions.iPhone || browser.versions.iPad || browser.versions.iPod) {
    // alert("苹果")
    window.location.href = "http://www.runoob.com/js/js-popup.html";
  } else if (browser.versions.android) {
    // alert("安卓")
    window.location.href = "https://www.baidu.com/";
  }
</script>