> For the complete documentation index, see [llms.txt](https://lochiwei.gitbook.io/web/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lochiwei.gitbook.io/web/js/val/prim/num/int.md).

# integers

[JS](/web/js.md) ⟩ [value](/web/js/val.md) ⟩ [primitive](/web/js/val/prim.md) ⟩ [number](/web/js/val/prim/num.md) ⟩ integers

{% hint style="success" %}

```javascript
x | 0        // x -> integer
```

{% endhint %}

{% tabs %}
{% tab title="💈範例" %}

```javascript
const pixelRatio = window.devicePixelRatio;
const width  = canvas.clientWidth  * pixelRatio | 0;
const height = canvas.clientHeight * pixelRatio | 0;
```

:point\_right: [three.js](https://threejs.org/manual/#en/responsive)
{% endtab %}
{% endtabs %}