javascript判断chrome浏览器的方法

<script type="text/javascript">
  var isChrome = window.navigator.userAgent.indexOf("Chrome") !== -1;
  alert(isChrome);
  if (isChrome) {
    alert("是Chrome浏览器");
  } else {
    alert("不是Chrome浏览器");
  }
</script>

function getBrowserInfo(){
    var ua = navigator.userAgent.toLocaleLowerCase();
    var browserType=null;
    if (ua.match(/msie/) != null || ua.match(/trident/) != null) {
      browserType = "IE";
      browserVersion = ua.match(/msie ([\d.]+)/) != null ? ua.match(/msie ([\d.]+)/)[1] : ua.match(/rv:([\d.]+)/)[1];
    } else if (ua.match(/firefox/) != null) {
      browserType = "火狐";
    }else if (ua.match(/ubrowser/) != null) {
      browserType = "UC";
    }else if (ua.match(/opera/) != null) {
      browserType = "欧朋";
    } else if (ua.match(/bidubrowser/) != null) {
      browserType = "百度";
    }else if (ua.match(/metasr/) != null) {
      browserType = "搜狗";
    }else if (ua.match(/tencenttraveler/) != null || ua.match(/qqbrowse/) != null) {
      browserType = "QQ";
    }else if (ua.match(/maxthon/) != null) {
      browserType = "遨游";
    }else if (ua.match(/chrome/) != null) {
      var is360 = _mime("type", "application/vnd.chromium.remoting-viewer");
      function _mime(option, value) {
        var mimeTypes = navigator.mimeTypes;
        for (var mt in mimeTypes) {
          if (mimeTypes[mt][option] == value) {
            return true;
          }
        }
        return false;
      }
      if(is360){
        browserType = '360';
      }else{
        $('html').css("zoom",".80");
      }
    }else if (ua.match(/safari/) != null) {
      browserType = "Safari";
    }
}