javascript - 圆不显示在 gmap 中

Question

这是我的代码:

function initMap() {

    var myLatLng = {lat: {{userInfo.lat}}, lng: {{userInfo.lng}} };

    var map = new google.maps.Map(document.getElementById('gmap'), {
        zoom: 16,
        center: myLatLng
    });

    // Add circle overlay and bind to marker
    var circle = new google.maps.Circle(document.getElementById('gmap'), {
        strokeColor: '#FF0000',
        strokeOpacity: 0.8,
        strokeWeight: 2,
        fillColor: '#FF0000',
        fillOpacity: 0.35,
        map: map,
        center: myLatLng,
        radius: 100    // 10 miles in metres
    });

}

console.log(myLatLng); 显示纬度和经度在那里， map 实际上缩放到我想要的位置。但是圆圈没有出现。谁能帮帮我吗？

Answer 1

您将两个参数传递给Circle构造函数；您的圈子选项，以及 document.getElementById('gmap')，这不是必需的。它仅用于 Map 构造函数。请参阅https://developers.google.com/maps/documentation/javascript/reference#Circle

你只需要做:

var circle = new google.maps.Circle({
        strokeColor: '#FF0000',
        strokeOpacity: 0.8,
        strokeWeight: 2,
        fillColor: '#FF0000',
        fillOpacity: 0.35,
        map: map,
        center: myLatLng,
        radius: 100    // 10 miles in metres
    });

代码片段:

function initMap() {

  var myLatLng = {lat: 42, lng:-72};

  var map = new google.maps.Map(document.getElementById('gmap'), {
    zoom: 16,
    center: myLatLng
  });

  // Add circle overlay and bind to marker
  var circle = new google.maps.Circle({
    strokeColor: '#FF0000',
    strokeOpacity: 0.8,
    strokeWeight: 2,
    fillColor: '#FF0000',
    fillOpacity: 0.35,
    map: map,
    center: myLatLng,
    radius: 100 // 100 metres
  });

}
google.maps.event.addDomListener(window, 'load', initMap);

html,
body,
#gmap {
  height: 100%;
  width: 100%;
}

<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="gmap"></div>