{
    id: item.userId,
    latitude: item.latitude,
    longitude: item.longitude,
    height: 50,
    width: 45,
    iconPath: '/static/Union-bg-unit.png',
    customCallout: {
      anchorY: 37,
      anchorX: 1,
      display: 'ALWAYS',
      url: item.avatar
    },
    joinCluster: true
  } as Marker
}

map里面的customCallout设置了anchorY和anchorX之后不会立即生效，只有点击之后才会回到正确的位置