# isFullWidthRow

Determines whether a row uses a full-width layout instead of individual column cells.

Canonical: https://grid.syidax.com/docs/options/isFullWidthRow/

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## What does this API do?

Determines whether a row uses a full-width layout instead of individual column cells.

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## Exact input and result types

```typescript
isFullWidthRow: (params: { row: GridRow; rowIndex: number; builtInKind: 'detail' | 'group' | 'group-footer' | 'loading' | 'custom' | null }) => boolean
```

| Item | Value |
| --- | --- |
| JavaScript name | isFullWidthRow |
| HTML attribute | is-full-width-row |
| Default | undefined |
| Input type | (params: { row: GridRow; rowIndex: number; builtInKind: 'detail' \| 'group' \| 'group-footer' \| 'loading' \| 'custom' \| null }) => boolean |

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## Usage flow

Set this on a property of the Grid element. Pass arrays, objects, and callbacks through JavaScript, and use new arrays or objects when applying changes.

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## Read related types

- [GridRow](https://grid.syidax.com/docs/types/GridRow.md)

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## Feature explanations and examples

- [Row height and pinned rows](https://grid.syidax.com/docs/features/row-layout.md) — Row height, top/bottom pinned rows, full-width rows, and merged cells are separate layout features. Choose based on whether you need persistent summaries or wide detail content.