Question

我有一个问题，即从谷歌地图javascript api放置搜索框的地方获取lat和lng的值。

这是谷歌提供的能够搜索搜索框内的地方的代码。

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <style>
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      #map {
        height: 100%;
      }
.controls {
  margin-top: 10px;
  border: 1px solid transparent;
  border-radius: 2px 0 0 2px;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  height: 32px;
  outline: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

#pac-input {
  background-color: #fff;
  font-family: Roboto;
  font-size: 15px;
  font-weight: 300;
  margin-left: 12px;
  padding: 0 11px 0 13px;
  text-overflow: ellipsis;
  width: 300px;
}

#pac-input:focus {
  border-color: #4d90fe;
}

.pac-container {
  font-family: Roboto;
}

#type-selector {
  color: #fff;
  background-color: #4d90fe;
  padding: 5px 11px 0px 11px;
}

#type-selector label {
  font-family: Roboto;
  font-size: 13px;
  font-weight: 300;
}

    </style>
    <title>Places Searchbox</title>
    <style>
      #target {
        width: 345px;
      }
    </style>
  </head>
  <body>
    <input id="pac-input" class="controls" type="text" placeholder="Search Box">
    <div id="map"></div>
    <script>
// This example adds a search box to a map, using the Google Place Autocomplete
// feature. People can enter geographical searches. The search box will return a
// pick list containing a mix of places and predicted search terms.

function initAutocomplete() {
  var map = new google.maps.Map(document.getElementById('map'), {
    center: {lat: -33.8688, lng: 151.2195},
    zoom: 13,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  });

  // Create the search box and link it to the UI element.
  var input = document.getElementById('pac-input');
  var searchBox = new google.maps.places.SearchBox(input);
  map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

  // Bias the SearchBox results towards current map's viewport.
  map.addListener('bounds_changed', function() {
    searchBox.setBounds(map.getBounds());
  });

  var markers = [];
  // [START region_getplaces]
  // Listen for the event fired when the user selects a prediction and retrieve
  // more details for that place.
  searchBox.addListener('places_changed', function() {
    var places = searchBox.getPlaces();

    if (places.length == 0) {
      return;
    }

    // Clear out the old markers.
    markers.forEach(function(marker) {
      marker.setMap(null);
    });
    markers = [];

    // For each place, get the icon, name and location.
    var bounds = new google.maps.LatLngBounds();
    places.forEach(function(place) {
      var icon = {
        url: place.icon,
        size: new google.maps.Size(71, 71),
        origin: new google.maps.Point(0, 0),
        anchor: new google.maps.Point(17, 34),
        scaledSize: new google.maps.Size(25, 25)
      };

      // Create a marker for each place.
      markers.push(new google.maps.Marker({
        map: map,
        icon: icon,
        title: place.name,
        position: place.geometry.location

      }));

      if (place.geometry.viewport) {
        // Only geocodes have viewport.
        bounds.union(place.geometry.viewport);
      } else {
        bounds.extend(place.geometry.location);
      }
    });
    map.fitBounds(bounds);
  });
  // [END region_getplaces]
}

    </script>
    <script src="https://maps.googleapis.com/maps/api/js?key=[API-KEY]&libraries=places&callback=initAutocomplete"
         async defer></script>
  </body>
</html>

现在我想在javascript中获取lat和lng的确切值到一些变量。经过一些研究后我发现了这个

var location = place.geometry.location;
var lat = location.lat();
var lng = location.lng();

因此，当console.log变量lat和lng出现在Chrome控制台时。问题是，我不明白我应该从哪里集成lat和lng代码从位置，以便它可以使用谷歌的例子？

有什么想法吗？

谢谢！

Answer 1

试试这段代码：

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <style>
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      #map {
        height: 100%;
      }
.controls {
  margin-top: 10px;
  border: 1px solid transparent;
  border-radius: 2px 0 0 2px;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  height: 32px;
  outline: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

#pac-input {
  background-color: #fff;
  font-family: Roboto;
  font-size: 15px;
  font-weight: 300;
  margin-left: 12px;
  padding: 0 11px 0 13px;
  text-overflow: ellipsis;
  width: 300px;
}

#pac-input:focus {
  border-color: #4d90fe;
}

.pac-container {
  font-family: Roboto;
}

#type-selector {
  color: #fff;
  background-color: #4d90fe;
  padding: 5px 11px 0px 11px;
}

#type-selector label {
  font-family: Roboto;
  font-size: 13px;
  font-weight: 300;
}

    </style>
    <title>Places Searchbox</title>
    <style>
      #target {
        width: 345px;
      }
    </style>
  </head>
  <body>
    <input id="pac-input" class="controls" type="text" placeholder="Search Box">
    <div id="map"></div>
    <script>
		// This example adds a search box to a map, using the Google Place Autocomplete
		// feature. People can enter geographical searches. The search box will return a
		// pick list containing a mix of places and predicted search terms.

		function initAutocomplete() {
		  var map = new google.maps.Map(document.getElementById('map'), {
			center: {lat: -33.8688, lng: 151.2195},
			zoom: 13,
			mapTypeId: google.maps.MapTypeId.ROADMAP
		  });

		  // Create the search box and link it to the UI element.
		  var input = document.getElementById('pac-input');
		  var searchBox = new google.maps.places.SearchBox(input);
		  map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

		  // Bias the SearchBox results towards current map's viewport.
		  map.addListener('bounds_changed', function() {
			searchBox.setBounds(map.getBounds());
		  });

		  var markers = [];
		  // [START region_getplaces]
		  // Listen for the event fired when the user selects a prediction and retrieve
		  // more details for that place.
		  searchBox.addListener('places_changed', function() {
			var places = searchBox.getPlaces();

			if (places.length == 0) {
			  return;
			}

			// Clear out the old markers.
			markers.forEach(function(marker) {
			  marker.setMap(null);
			});
			markers = [];

			// For each place, get the icon, name and location.
			var bounds = new google.maps.LatLngBounds();
			places.forEach(function(place) {
			  var icon = {
				url: place.icon,
				size: new google.maps.Size(71, 71),
				origin: new google.maps.Point(0, 0),
				anchor: new google.maps.Point(17, 34),
				scaledSize: new google.maps.Size(25, 25)
			  };
			  console.log("latitude: " + place.geometry.location.lat() + ", longitude: " + place.geometry.location.lng());

			  // Create a marker for each place.
			  markers.push(new google.maps.Marker({
				map: map,
				icon: icon,
				title: place.name,
				position: place.geometry.location

			  }));

			  if (place.geometry.viewport) {
				// Only geocodes have viewport.
				bounds.union(place.geometry.viewport);
			  } else {
				bounds.extend(place.geometry.location);
			  }
			});
			map.fitBounds(bounds);
		  });
		  // [END region_getplaces]
		}
    </script>
    <script src="https://maps.googleapis.com/maps/api/js?key=[API-KEY]&libraries=places&callback=initAutocomplete"
         async defer></script>
  </body>
</html>

从谷歌地图的地方获取lat和lng

1 个答案: