循环JSON键以添加Google Maps数据

// 假设我们有一个包含地理位置信息的JSON对象
var locations = {
  "1": {
    "name": "北京",
    "lat": 39.9042,
    "lng": 116.4074
  },
  "2": {
    "name": "上海",
    "lat": 31.2304,
    "lng": 121.4737
  },
  "3": {
    "name": "广州",
    "lat": 23.1291,
    "lng": 113.2644
  }
};

// 创建一个Google Maps地图实例
var map = new google.maps.Map(document.getElementById('map'), {
  center: { lat: 39.9042, lng: 116.4074 },
  zoom: 8
});

// 循环JSON键
for (var key in locations) {
  if (locations.hasOwnProperty(key)) {
    var location = locations[key];
    var marker = new google.maps.Marker({
      position: { lat: location.lat, lng: location.lng },
      map: map,
      title: location.name
    });
  }
}