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