如何在此 Google 地图上启用地理位置？

Question

我想知道如何在这个谷歌地图 sn-p 上启用地理定位

<input id="pac-input" class="controls" type="text"
    placeholder="Enter a location">
<div id="map"></div>
<div id="infowindow-content">
  <span id="place-name"  class="title"></span><br>
  Place ID <span id="place-id"></span><br>
  <span id="place-address"></span>
</div>
<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&libraries=places&callback=initMap"
        async defer></script>

// This sample uses the Place Autocomplete widget to allow the user to search
// for and select a place. The sample then displays an info window containing
// the place ID and other information about the place that the user has
// selected.

// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    center: {lat: 48.137260, lng: 11.574850},
    zoom: 13
  });

  var input = document.getElementById('pac-input');

  var autocomplete = new google.maps.places.Autocomplete(input);
  autocomplete.bindTo('bounds', map);

  map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

  var infowindow = new google.maps.InfoWindow();
  var infowindowContent = document.getElementById('infowindow-content');
  infowindow.setContent(infowindowContent);
  var marker = new google.maps.Marker({
    map: map
  });
  marker.addListener('click', function() {
    infowindow.open(map, marker);
  });

  autocomplete.addListener('place_changed', function() {
    infowindow.close();
    var place = autocomplete.getPlace();
    if (!place.geometry) {
      return;
    }

    if (place.geometry.viewport) {
      map.fitBounds(place.geometry.viewport);
    } else {
      map.setCenter(place.geometry.location);
      map.setZoom(17);
    }

    // Set the position of the marker using the place ID and location.
    marker.setPlace({
      placeId: place.place_id,
      location: place.geometry.location
    });
    marker.setVisible(true);

    infowindowContent.children['place-name'].textContent = place.name;
    infowindowContent.children['place-id'].textContent = place.place_id;
    infowindowContent.children['place-address'].textContent =
        place.formatted_address;
    infowindow.open(map, marker);
  });
}

https://jsfiddle.net/arabtornado/oc9ryva1/7/

这是谷歌地图地理定位的参考，但由于我对 js 还是很陌生，我无法在上面搜索的代码上实现该代码

https://jsfiddle.net/arabtornado/ectxdm1j/

谢谢

Answer 1

这就是答案

// This sample uses the Place Autocomplete widget to allow the user to search
// for and select a place. The sample then displays an info window containing
// the place ID and other information about the place that the user has
// selected.

// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'));

  navigator.geolocation.getCurrentPosition(function(position) {
    // Center on user's current location if geolocation prompt allowed
    var initialLocation = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);
    map.setCenter(initialLocation);
    map.setZoom(13);
  }, function(positionError) {
    // User denied geolocation prompt - default to Chicago
    map.setCenter(new google.maps.LatLng(39.8097343, -98.5556199));
    map.setZoom(13);
  });

  var input = document.getElementById('pac-input');

  var autocomplete = new google.maps.places.Autocomplete(input);
  autocomplete.bindTo('bounds', map);

  map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

  var infowindow = new google.maps.InfoWindow();
  var infowindowContent = document.getElementById('infowindow-content');
  infowindow.setContent(infowindowContent);
  var marker = new google.maps.Marker({
    map: map
  });
  marker.addListener('click', function() {
    infowindow.open(map, marker);
  });

  autocomplete.addListener('place_changed', function() {
    infowindow.close();
    var place = autocomplete.getPlace();
    if (!place.geometry) {
      return;
    }

    if (place.geometry.viewport) {
      map.fitBounds(place.geometry.viewport);
    } else {
      map.setCenter(place.geometry.location);
      map.setZoom(17);
    }

    // Set the position of the marker using the place ID and location.
    marker.setPlace({
      placeId: place.place_id,
      location: place.geometry.location
    });
    marker.setVisible(true);

    infowindowContent.children['place-name'].textContent = place.name;
    infowindowContent.children['place-id'].textContent = place.place_id;
    infowindowContent.children['place-address'].textContent =
        place.formatted_address;
    infowindow.open(map, marker);

     placeid = place.place_id;
  });


}

<meta name="referrer" content="never">
<meta name="referrer" content="no-referrer">

<input id="pac-input" class="controls" type="text"
    placeholder="Enter a location">
<div id="map"></div>
<div id="infowindow-content">
  <span id="place-name"  class="title"></span><br>
  Place ID <span id="place-id"></span><br>
  <span id="place-address"></span>
</div>
<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&libraries=places&callback=initMap"
        async defer></script>

https://jsfiddle.net/arabtornado/oc9ryva1/38/