---
id: fast-element.nodebehavioroptions.filter
title: NodeBehaviorOptions.filter property
hide_title: true
---
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[@microsoft/fast-element](./fast-element.md) &gt; [NodeBehaviorOptions](./fast-element.nodebehavioroptions.md) &gt; [filter](./fast-element.nodebehavioroptions.filter.md)

## NodeBehaviorOptions.filter property

Filters nodes that are synced with the property. Called one time for each element in the array.

<b>Signature:</b>

```typescript
filter?: ElementsFilter;
```