# Undo / redo for grid edits
> Live in [demo 55-state-maintenance](https://svgrid.com/demos/55-state-maintenance/).
> Live demo: State maintenance - https://svgrid.com/demos/55-state-maintenance/
## When
Maintain a history stack of cell edits; Ctrl+Z / Ctrl+Y replay backwards / forwards.
## How
Key API surface:
- `onCellValueChange records {rowId, field, before, after}`
- `Ctrl+Z replays inverse`
See the demo source for the full implementation; this recipe pins the
pattern + the surface so you can copy-paste it confidently. The doc
page that explains the underlying feature in depth is linked from the
[recipes index](https://github.com/sv-grid/sv-grid/blob/main/docs/recipes/index.md).
## More examples
### Undo / redo (Ctrl+Z)
`api.undo()` / `api.redo()` + Ctrl+Z / Ctrl+Y / Ctrl+Shift+Z. 200-step bounded history; clearHistory after a successful save resets the baseline.
> Live demo: Undo / redo (Ctrl+Z) - https://svgrid.com/demos/86-undo-redo/
## Undo across several edits
The stack is per grid and survives sorting - undo walks the edits, not the
view. Change three cells, sort a column, then undo: the values come back in the
order you set them.
```svelte
{edits} edit(s) made
String(r.id)}
editable
sortable
onCellValueChange={() => (edits += 1)}
onApiReady={(next) => (api = next)}
/>
```
## See also
- [Demo 55-state-maintenance source](https://github.com/sv-grid/sv-grid/blob/main/examples/src/demos/55-state-maintenance.svelte)
- [Demo 55-state-maintenance prompt sidecar](https://github.com/sv-grid/sv-grid/blob/main/examples/src/demos/prompts/55-state-maintenance.md) - drop into an LLM context window
- [Recipes index](https://github.com/sv-grid/sv-grid/blob/main/docs/recipes/index.md)
---
SvGrid is the Svelte 5 data grid (`npm install @svgrid/grid`, MIT). This page: https://svgrid.com/docs/recipes/undo-redo-edits/ . All docs: https://svgrid.com/llms.txt