---
id: fast-foundation.autoupdatemode
title: AutoUpdateMode type
hide_title: true
---
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[@microsoft/fast-foundation](./fast-foundation.md) &gt; [AutoUpdateMode](./fast-foundation.autoupdatemode.md)

## AutoUpdateMode type

Defines if the component updates its position automatically. Calling update() always provokes an update. anchor - the component only updates its position when the anchor resizes (default) auto - the component updates its position when: - update() is called - the anchor resizes - the window resizes - the viewport resizes - any scroll event in the document

<b>Signature:</b>

```typescript
export declare type AutoUpdateMode = "anchor" | "auto";
```