自定义标注后，点击怎么获取到它的值，大佬们知道吗

自定义的想怎么取都可以啊 你自己的东西，你自己控制啊

自定义标签不是在viewer.entities.add里面添加嘛，然后我点击事件要怎么获取到它的值，比如获取它的ID

var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas)
var scene = viewer.scene
var billboard
handler.setInputAction(function(click){
    var cartesian = viewer.camera.pickEllipsoid(click.position, viewer.scene.globe.ellipsoid)
    if(cartesian){
        var pickdObject = scene.pick(click.position)
        var position = viewer.camera.pickEllipsoid(click.position)
        if(Cesium.defined(pickdObject)){
			//根据点击对象的id删除该对象
            viewer.entities.getById(pickdObject.id._id).show = false //隐藏标记
        }else{
            var cartographic = viewer.scene.globe.ellipsoid.cartesianToCartographic(position)
            var lng = Cesium.Math.toDegrees(cartographic.longitude).toFixed(4) //经纬度
            var lat = Cesium.Math.toDegrees(cartographic.latitude).toFixed(4)
            billboard = viewer.entities.add({
                position: Cesium.Cartesian3.fromDegrees(lng, lat),
                billboard: {
                    image: "img/placeMarker.png",
                    pixelOffset: new Cesium.Cartesian2(0, 0),
                    eyeOffset: new Cesium.Cartesian3(0.0, 0.0, 0.0),
                    horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
                    verticalOrigin: Cesium.VerticalOrigin.BOTTOM
                }
            });
        }
    }

},Cesium.ScreenSpaceEventType.LEFT_CLICK)