Page.emulateVisionDeficiency() 方法

¥Page.emulateVisionDeficiency() method

模拟页面上给定的视力缺陷。

¥Simulates the given vision deficiency on the page.

签名

¥Signature

class Page {
  abstract emulateVisionDeficiency(
    type?: Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']
  ): Promise<void>;
}

参数

¥Parameters

范围	类型	描述
type	Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']	（可选）要模拟的缺陷类型，或要重置的 'none'。

Returns:

Promise<void>

示例

¥Example

import puppeteer from 'puppeteer';

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto('https://v8.dev/blog/10-years');

  await page.emulateVisionDeficiency('achromatopsia');
  await page.screenshot({path: 'achromatopsia.png'});

  await page.emulateVisionDeficiency('deuteranopia');
  await page.screenshot({path: 'deuteranopia.png'});

  await page.emulateVisionDeficiency('blurredVision');
  await page.screenshot({path: 'blurred-vision.png'});

  await browser.close();
})();