41 lines
912 B
Markdown
41 lines
912 B
Markdown
---
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sidebar_label: Mouse.wheel
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---
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# Mouse.wheel() method
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Dispatches a `mousewheel` event.
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**Signature:**
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```typescript
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class Mouse {wheel(options?: MouseWheelOptions): Promise<void>;}
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```
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## Parameters
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| Parameter | Type | Description |
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| --- | --- | --- |
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| options | [MouseWheelOptions](./puppeteer.mousewheeloptions.md) | <i>(Optional)</i> Optional: <code>MouseWheelOptions</code>. |
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**Returns:**
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Promise<void>
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## Example
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An example of zooming into an element:
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```ts
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await page.goto('https://mdn.mozillademos.org/en-US/docs/Web/API/Element/wheel_event$samples/Scaling_an_element_via_the_wheel?revision=1587366');
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const elem = await page.$('div');
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const boundingBox = await elem.boundingBox();
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await page.mouse.move(
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boundingBox.x + boundingBox.width / 2,
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boundingBox.y + boundingBox.height / 2
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);
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await page.mouse.wheel({ deltaY: -100 })
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```
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