---
metadata:
- name: generator
content: Diplodoc Platform v5.39.1
alternate:
- https://yandex.com.tr/dev/jsapi-v2-1/doc/en/v2-1/examples/cases/object_manager_balloon.md
- https://yandex.com.tr/dev/jsapi-v2-1/doc/ru/v2-1/examples/cases/object_manager_balloon.md
---
> **Documentation Index:** Fetch the complete configuration index at https://yandex.com.tr/dev/jsapi-v2-1/doc/en/llms.txt
# Opening the balloon on the placemark in ObjectManager
Open in CodeSandbox
ObjectManager - A class for adding a large number of objects to the map
without needing to create placemarks individually.
Objects added in ObjectManager are in the ObjectManager.objects collection.
The clusters formed from the added placemarks are added to the ObjectManager.clusters collection.
These collections have managers that control balloons and hints (ObjectManager.objects.balloon, ObjectManager.clusters.hint).
{% list tabs %}
- index.html
```html
Examples. Working with the balloon in ObjectManager
```
- object_manager_balloon.js
```js
ymaps.ready(init);
function init() {
var myMap = new ymaps.Map(
"map",
{
center: [55.76, 37.64],
zoom: 10,
},
{
searchControlProvider: "yandex#search",
}
),
objectManager = new ymaps.ObjectManager({
clusterize: true,
});
myMap.geoObjects.add(objectManager);
$.ajax({
url: "data.json",
}).done(function (data) {
objectManager.add(data);
// Opening the balloon on the placemark with id == 1.
var objectState = objectManager.getObjectState(1);
if (objectState.isClustered) {
// Making sure that the specified object has been "selected" in the balloon.
objectManager.clusters.state.set(
"activeObject",
objectManager.objects.getById(1)
);
/**
* All the generated clusters have unique identifiers.
* This identifier must be passed to the balloon manager to specify
* which cluster to show the balloon on.
*/
objectManager.clusters.balloon.open(objectState.cluster.id);
} else {
objectManager.objects.balloon.open(1);
}
});
}
```
{% endlist %}