---
id: fast-element.childrenbehavioroptions
title: ChildrenBehaviorOptions type
hide_title: true
---
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[@microsoft/fast-element](./fast-element.md) &gt; [ChildrenBehaviorOptions](./fast-element.childrenbehavioroptions.md)

## ChildrenBehaviorOptions type

The options used to configure child/subtree node observation.

<b>Signature:</b>

```typescript
export declare type ChildrenBehaviorOptions<T = any> = ChildListBehaviorOptions<T> | SubtreeBehaviorOptions<T>;
```