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Version: 24.38.0

Page.emulateNetworkConditions() 方法

🌐 Page.emulateNetworkConditions() method

这不会影响 WebSockets 和 WebRTC PeerConnections(参见 https://crbug.com/563644)。要将页面设置为离线,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().

可以通过导入 PredefinedNetworkConditions 来使用预定义的网络条件列表。

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

语法

🌐 Signature

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

参数

🌐 Parameters

范围

🌐 Parameter

类型

🌐 Type

描述

🌐 Description

networkConditions

网络状况 | null

传递 null 会禁用网络条件模拟。

🌐 Passing null disables network condition emulation.

返回:

Promise<void>

示例

🌐 Example

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

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();