javascript - 谷歌地图 - 未捕获的类型错误

Question

我有一个按钮，如果单击该按钮，则会在 map 上显示用户位置。目前很难，我收到此错误 Uncaught TypeError: Cannot set property 'position' of undefined

这是我的代码:

            <div class="col-sm-offset-4 col-sm-4">
             <input type="button" value="Show my location on Map" id="mapButton">
                <article></article>
            </div>

$('#mapButton').click(function() {
$( "#mapcontainer" ).remove();
function success(position){
  var mapcanvas = document.createElement('div');
  mapcanvas.id = 'mapcontainer';
  mapcanvas.style.height = '300px';
  mapcanvas.style.width = '300px';

  document.querySelector('article').appendChild(mapcanvas);

  var coords = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);
  alert(coords);
  var options = {
    zoom: 15,
    center: coords,
    mapTypeControl: false,
    navigationControlOptions: {
        style: google.maps.NavigationControlStyle.SMALL
    },
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };
  var map =  new google.maps.Map("mapcontainer",options)[0];

  marker = new google.maps.Marker({
      position: coords,
      map: map,
      title:"You are here!"
  });
}

if (navigator.geolocation) {
  navigator.geolocation.getCurrentPosition(success);
} else {
  error('Geo Location is not supported');
}

});

为什么会抛出这个错误？

JSFiddle

Answer 1

map 的第一个参数是一个 div 元素。不要传递“mapcontainer”，而是传递

document.getElementById("mapcontainer")

Working example

 var map =  new google.maps.Map(document.getElementById("mapcontainer"),options)[0];
      var marker = new google.maps.Marker({
          'position': coords,
          map: map,
          title:"You are here!"
      });