判定是否是pc端移动端

<script type="text/javascript">
        function browserRedirect() {
            console.log('s')
      var sUserAgent = navigator.userAgent.toLowerCase();
      if (/ipad|iphone|midp|rv:1.2.3.4|ucweb|android|windows ce|windows mobile/.test(sUserAgent)) {
      //跳转移动端页面
      console.log('yd',window.location.origin)
            if(window.location.origin!=='https://m.zmln1021.cn'){
                window.location.href="https://m.zmln1021.cn";
            } 
      } else {
          console.log('px',window.location.origin)
            if(window.location.origin!=='https://www.zmln1021.cn'){
            window.location.href="https://www.zmln1021.cn";
            } 
     }
    }
        browserRedirect(); 
    </script>