Geolocalização Google Mapas

    <script>
        // Note: This example requires that you consent to location sharing when
        // prompted by your browser. If you see the error "The Geolocation service
        // failed.", it means you probably did not give permission for the browser to
        // locate you.
        jQuery(document).ready(function($) {

        });
        function initMap() {
          var map = new google.maps.Map(document.getElementById('map'), {
            center: {lat: -34.397, lng: 150.644},
            zoom: 6
          });
          var infoWindow = new google.maps.InfoWindow({map: map});

          // Try HTML5 geolocation.
          if (navigator.geolocation) {
            navigator.geolocation.getCurrentPosition(function(position) {
              var pos = {
                lat: position.coords.latitude,
                lng: position.coords.longitude
              };

              infoWindow.setPosition(pos);
              infoWindow.setContent('Você está aqui!');
              map.setCenter(pos);
              console.log(pos.lat+","+pos.lng)
            }, function() {
              handleLocationError(true, infoWindow, map.getCenter());
            });
          } else {
            // Browser doesn't support Geolocation
            handleLocationError(false, infoWindow, map.getCenter());
          }
        }

        function handleLocationError(browserHasGeolocation, infoWindow, pos) {
          infoWindow.setPosition(pos);
          infoWindow.setContent(browserHasGeolocation ?
                                'Error: The Geolocation service failed.' :
                                'Error: Your browser doesn\'t support geolocation.');
        }

    </script>
    <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&signed_in=true&callback=initMap"
        async defer></script>