# drilldown

Enable Treemap branch navigation and accessible hierarchy controls.

Canonical: https://chart.syidax.com/docs/options/drilldown/

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## Definition

| Item | Value |
| --- | --- |
| JavaScript property | `drilldown` |
| HTML attribute | `drilldown` |
| Type | `boolean` |
| Default | `false` |

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## Configuration example

```javascript
chart.drilldown = false;
```

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## Related documentation

A property with the same name may have different types and defaults across charts. When using a direct tag, follow that chart's documentation below.

- [Shared facade and direct tags](https://chart.syidax.com/docs/concepts.md)
- [sy-treemap](https://chart.syidax.com/docs/components/treemap.md#property-drilldown)
- [sy-sunburst](https://chart.syidax.com/docs/components/sunburst.md#property-drilldown)
- [sy-icicle](https://chart.syidax.com/docs/components/icicle.md#property-drilldown)
- [sy-dendrogram](https://chart.syidax.com/docs/components/dendrogram.md#property-drilldown)