Question

我正在尝试在Google地图上插入此圈子，通过在标题中包含以下js文件，地图显示正常;

/**
       * Called on the intiial page load.
       */
      function initialize() {
        var latLng = new google.maps.LatLng(50.272213,-5.054973);
        var options = {
          'zoom': 9,
          'center': latLng,
          'mapTypeId': google.maps.MapTypeId.ROADMAP
        };

        var map = new google.maps.Map(document.getElementById('map'),
            options);

      }

      // Register an event listener to fire when the page finishes loading.
      google.maps.event.addDomListener(window, 'load', initialize);

但是，当我添加以下内容以包含圆圈时，它会断开并且不会加载;

 /**
       * Called on the intiial page load.
       */
      function initialize() {
        var latLng = new google.maps.LatLng(50.272213,-5.054973);
        var options = {
          'zoom': 9,
          'center': latLng,
          'mapTypeId': google.maps.MapTypeId.ROADMAP
        };

        var map = new google.maps.Map(document.getElementById('map'),
            options);

        // Add a Circle overlay to the map.
            var circle = new google.maps.Circle({
            map: map,
            center: new google.maps.LatLng(50.272213,-5.054973),
            fillColor: #00FF00,
            fillOpacity: 0.2,
            strokeColor: #00FF00,
            strokeOpacity: 0.4,
            strokeWeight: 2
            });
            circle.setRadius(18362.55489862987);

      }

      // Register an event listener to fire when the page finishes loading.
      google.maps.event.addDomListener(window, 'load', initialize);

如果有人能指出我哪里出错了，请...

Answer 1

不要调用setRadius，只需将radius指定为圆选项的参数即可。另外，假设您已经使用与圆心相同的坐标创建了一个latlng对象，只需重复使用即可。

 var circle = new google.maps.Circle({
            map: map,
            center: latLng,
            fillColor: #00FF00,
            fillOpacity: 0.2,
            strokeColor: #00FF00,
            strokeOpacity: 0.4,
            strokeWeight: 2,
            radius: 18362.55489862987
 });

Answer 2

尝试将您的侦听器代码更改为：

google.maps.event.addDomListener(window, 'onload', initialize());

以下是一个工作示例：http://jsfiddle.net/pVh3b/1/

Google Map V3 API js中的圆形叠加层

2 个答案: