---
id: fast-components.fastnumberfield
title: fastNumberField variable
hide_title: true
---
<!-- Do not edit this file. It is automatically generated by API Documenter. -->

[@microsoft/fast-components](./fast-components.md) &gt; [fastNumberField](./fast-components.fastnumberfield.md)

## fastNumberField variable

A function that returns a [NumberField](./fast-foundation.numberfield.md) registration for configuring the component with a DesignSystem. Implements [numberFieldTemplate](./fast-foundation.numberfieldtemplate.md)

<b>Signature:</b>

```typescript
fastNumberField: (overrideDefinition?: import("@microsoft/fast-foundation").OverrideFoundationElementDefinition<NumberFieldOptions> | undefined) => import("@microsoft/fast-foundation").FoundationElementRegistry<NumberFieldOptions, import("@microsoft/fast-element").Constructable<import("@microsoft/fast-foundation").FoundationElement>>
```

## Remarks

Generates HTML Element: `<fast-number-field>`

[delegatesFocus](https://developer.mozilla.org/en-US/docs/Web/API/ShadowRoot/delegatesFocus)
