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index.md
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index.md
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---
title: "Element: ariaOrientation property"
short-title: ariaOrientation
slug: Web/API/Element/ariaOrientation
page-type: web-api-instance-property
browser-compat: api.Element.ariaOrientation
---
{{DefaultAPISidebar("DOM")}}
The **`ariaOrientation`** property of the {{domxref("Element")}} interface reflects the value of the [`aria-orientation`](/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-orientation) attribute, which indicates whether the element's orientation is horizontal, vertical, or unknown/ambiguous.
## Value
A string with one of the following values:
- `"horizontal"`
- : The element is horizontal.
- `"vertical"`
- : The element is vertical.
- `"undefined"`
- : The element's orientation is unknown.
## Examples
In this example the [`aria-orientation`](/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-orientation) attribute on the element with an ID of `handle_zoomSlider` is set to "`vertical`". Using `ariaOrientation` we update the value to "`horizontal`".
```html
<div
id="handle_zoomSlider"
role="slider"
aria-orientation="vertical"
aria-valuemin="0"
aria-valuemax="17"
aria-valuenow="14"
tabindex="0">
<span>11</span>
</div>
```
```js
let el = document.getElementById("handle_zoomSlider");
console.log(el.ariaOrientation); // "vertical"
el.ariaOrientation = "horizontal";
console.log(el.ariaOrientation); // "horizontal"
```
## Specifications
{{Specifications}}
## Browser compatibility
{{Compat}}