# shiftClickAdditive

Chooses whether Shift-click range selection adds to the existing selection.

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

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## What does this API do?

Chooses whether Shift-click range selection adds to the existing selection.

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## Exact input and result types

```typescript
shiftClickAdditive: boolean
```

| Item | Value |
| --- | --- |
| JavaScript name | shiftClickAdditive |
| HTML attribute | shift-click-additive |
| Default | false |
| Input type | boolean |

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## Usage flow

Set this on a property of the Grid element. In HTML, you can also use the shift-click-additive attribute. Pass arrays, objects, and callbacks through JavaScript, and use new arrays or objects when applying changes.

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## Feature explanations and examples

- [Row selection](https://grid.syidax.com/docs/features/row-selection.md) — Row selection chooses targets for bulk actions such as approval, export, or assignment. Unlike cell range selection, it selects an entire order.