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 |
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();
})();