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1.4 KiB
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| Page.emulateVisionDeficiency |
Page.emulateVisionDeficiency() method
Simulates the given vision deficiency on the page.
Signature:
class Page {
emulateVisionDeficiency(
type?: Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']
): Promise<void>;
}
Parameters
| Parameter | Type | Description |
|---|---|---|
| type | Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type'] | (Optional) the type of deficiency to simulate, or 'none' to reset. |
Returns:
Promise<void>
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();
})();