---
url: /process-functions/hierarchy-descendants.md
description: >-
  Returns all elements that are descendants of a specific parent within a
  hierarchy.
---

# hierarchy.descendants

Returns all elements that are descendants of a specific parent within a hierarchy.

```js
hierarchy.descendants(dimension, hierarchy, parent)
```

#### Parameters

* `dimension` - The dimension within which to check a hierarchy exists.
* `hierarchy` - The identifier of the hierarchy.
* `parent` - The name of the parent element of which to return the descendants of.

#### Example

```js
let elements = JSON.parse(hierarchy.descendants("Time", "Days Since Release", "Days Since Release"))
```