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Playwright 库

Playwright 模块提供了一种启动浏览器实例的方法。以下是使用 Playwright 进行自动化操作的典型示例：

🌐 Playwright module provides a method to launch a browser instance. The following is a typical example of using Playwright to drive automation:

const { chromium, firefox, webkit } = require('playwright');

(async () => {
  const browser = await chromium.launch();  // Or 'firefox' or 'webkit'.
  const page = await browser.newPage();
  await page.goto('http://example.com');
  // other actions...
  await browser.close();
})();

属性​

🌐 Properties

chromium​

Added before v1.9 playwright.chromium

此对象可用于启动或连接到 Chromium，并返回 Browser 实例。

🌐 This object can be used to launch or connect to Chromium, returning instances of Browser.

用法

playwright.chromium

类型

devices​

Added before v1.9 playwright.devices

返回一个字典，用于与 browser.newContext() 或 browser.newPage() 一起使用的设备。

🌐 Returns a dictionary of devices to be used with browser.newContext() or browser.newPage().

const { webkit, devices } = require('playwright');
const iPhone = devices['iPhone 6'];

(async () => {
  const browser = await webkit.launch();
  const context = await browser.newContext({
    ...iPhone
  });
  const page = await context.newPage();
  await page.goto('http://example.com');
  // other actions...
  await browser.close();
})();

用法

playwright.devices

类型

errors​

Added before v1.9 playwright.errors

如果无法完成请求，Playwright 的方法可能会抛出错误。例如，如果选择器在给定的时间范围内没有匹配到任何节点，locator.waitFor() 可能会失败。

🌐 Playwright methods might throw errors if they are unable to fulfill a request. For example, locator.waitFor() might fail if the selector doesn't match any nodes during the given timeframe.

对于某些类型的错误，Playwright 使用特定的错误类。这些类可以通过 playwright.errors 获取。

🌐 For certain types of errors Playwright uses specific error classes. These classes are available via playwright.errors.

处理超时错误的示例：

🌐 An example of handling a timeout error:

try {
  await page.locator('.foo').waitFor();
} catch (e) {
  if (e instanceof playwright.errors.TimeoutError) {
    // Do something if this is a timeout.
  }
}

用法

playwright.errors

类型

firefox​

Added before v1.9 playwright.firefox

此对象可用于启动或连接到 Firefox，并返回 Browser 实例。

🌐 This object can be used to launch or connect to Firefox, returning instances of Browser.

用法

playwright.firefox

类型

request​

Added in: v1.16 playwright.request

公开可用于 Web API 测试的 API。

🌐 Exposes API that can be used for the Web API testing.

用法

playwright.request

类型

selectors​

Added before v1.9 playwright.selectors

选择器可用于安装自定义选择器引擎。有关更多信息，请参阅可扩展性。

🌐 Selectors can be used to install custom selector engines. See extensibility for more information.

用法

playwright.selectors

类型

webkit​

Added before v1.9 playwright.webkit

此对象可用于启动或连接到 WebKit，并返回 Browser 的实例。

🌐 This object can be used to launch or connect to WebKit, returning instances of Browser.

用法

playwright.webkit

类型