Page.emulateNetworkConditions() 方法

¥Page.emulateNetworkConditions() method

这不会影响 WebSocket 和 WebRTC PeerConnections（请参阅 https://crbug.com/563644）。要将页面设置为离线，你可以使用 Page.setOfflineMode()。

¥This does not affect WebSockets and WebRTC PeerConnections (see https://crbug.com/563644). To set the page offline, you can use Page.setOfflineMode().

通过导入 PredefinedNetworkConditions 可以使用预定义网络条件列表。

¥A list of predefined network conditions can be used by importing PredefinedNetworkConditions.

签名

¥Signature

class Page {
  abstract emulateNetworkConditions(
    networkConditions: NetworkConditions | null
  ): Promise<void>;
}

参数

¥Parameters

范围	类型	描述
networkConditions	NetworkConditions | 无效的	传递 null 将禁用网络条件模拟。

Returns:

Promise<void>

示例

¥Example

import {PredefinedNetworkConditions} from 'puppeteer';
const slow3G = PredefinedNetworkConditions['Slow 3G'];

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.emulateNetworkConditions(slow3G);
  await page.goto('https://www.google.com');
  // other actions...
  await browser.close();
})();