Mouse.wheel() 方法

¥Mouse.wheel() method

调度 mousewheel 事件。

¥Dispatches a mousewheel event.

签名

¥Signature

class Mouse {
  abstract wheel(options?: Readonly<MouseWheelOptions>): Promise<void>;
}

参数

¥Parameters

范围	类型	描述
options	只读<MouseWheelOptions>	（可选的）可选的：MouseWheelOptions。

Returns:

Promise<void>

示例

¥Example

放大元素的示例：

¥An example of zooming into an element:

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});