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    playwright

A high-level API to automate web browsers


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Package description

What is playwright?

Playwright is a Node.js library developed by Microsoft that allows developers to automate browser actions for testing and scraping purposes. It supports multiple browsers, including Chromium, Firefox, and WebKit, and provides a high-level API to control headless or full browsers over the DevTools Protocol.

What are playwright's main functionalities?

Browser Automation

Automate browser actions such as opening a page, clicking elements, and navigating through websites.

const { chromium } = require('playwright');

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

Web Scraping

Extract data from web pages by selecting elements and retrieving their content.

const { firefox } = require('playwright');

(async () => {
  const browser = await firefox.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com');
  const data = await page.textContent('.some-element');
  console.log(data);
  await browser.close();
})();

Automated Testing

Write automated tests for web applications, including assertions to validate the behavior of the application.

const { webkit } = require('playwright');
const { expect } = require('@playwright/test');

(async () => {
  const browser = await webkit.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com');
  const title = await page.title();
  expect(title).toBe('Example Domain');
  await browser.close();
})();

Cross-Browser Testing

Test web applications across multiple browsers to ensure compatibility and consistent behavior.

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

(async () => {
  for (const browserType of [chromium, firefox, webkit]) {
    const browser = await browserType.launch();
    const page = await browser.newPage();
    await page.goto('https://example.com');
    // Perform tests across different browsers
    await browser.close();
  }
})();

Mobile Emulation

Emulate mobile devices to test responsive designs and touch interactions.

const { chromium, devices } = require('playwright');
const iPhone11 = devices['iPhone 11 Pro'];

(async () => {
  const browser = await chromium.launch();
  const context = await browser.newContext({
    ...iPhone11
  });
  const page = await context.newPage();
  await page.goto('https://example.com');
  // Emulate mobile device actions and layout
  await browser.close();
})();

Other packages similar to playwright

Readme

Source

🎭 Playwright

npm version Join Slack Chromium version Firefox version WebKit version

Documentation | API reference

Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API. Playwright is built to enable cross-browser web automation that is ever-green, capable, reliable and fast.

LinuxmacOSWindows
Chromium 98.0.4695.0:white_check_mark::white_check_mark::white_check_mark:
WebKit 15.4:white_check_mark::white_check_mark::white_check_mark:
Firefox 94.0.1:white_check_mark::white_check_mark::white_check_mark:

Headless execution is supported for all the browsers on all platforms. Check out system requirements for details.

Usage

npm i -D playwright

This installs Playwright and browser binaries for Chromium, Firefox and WebKit. Once installed, you can require Playwright in a Node.js script and automate web browser interactions.

Capabilities

Playwright is built to automate the broad and growing set of web browser capabilities used by Single Page Apps and Progressive Web Apps.

  • Scenarios that span multiple page, domains and iframes
  • Auto-wait for elements to be ready before executing actions (like click, fill)
  • Intercept network activity for stubbing and mocking network requests
  • Emulate mobile devices, geolocation, permissions
  • Support for web components via shadow-piercing selectors
  • Native input events for mouse and keyboard
  • Upload and download files

Examples

Page screenshot

This code snippet navigates to whatsmyuseragent.org in Chromium, Firefox and WebKit, and saves 3 screenshots.

const playwright = require('playwright');

(async () => {
  for (const browserType of [playwright.chromium, playwright.firefox, playwright.webkit]) {
    const browser = await browserType.launch();
    const context = await browser.newContext();
    const page = await context.newPage();
    await page.goto('http://whatsmyuseragent.org/');
    await page.screenshot({ path: `example-${browserType.name()}.png` });
    await browser.close();
  }
})();
Mobile and geolocation

This snippet emulates Mobile Safari on a device at a given geolocation, navigates to maps.google.com, performs action and takes a screenshot.

const { webkit, devices } = require('playwright');
const iPhone11 = devices['iPhone 11 Pro'];

(async () => {
  const browser = await webkit.launch();
  const context = await browser.newContext({
    ...iPhone11,
    locale: 'en-US',
    geolocation: { longitude: 12.492507, latitude: 41.889938 },
    permissions: ['geolocation']
  });
  const page = await context.newPage();
  await page.goto('https://maps.google.com');
  await page.click('text="Your location"');
  await page.waitForRequest(/.*preview\/pwa/);
  await page.screenshot({ path: 'colosseum-iphone.png' });
  await browser.close();
})();
Evaluate in browser context

This code snippet navigates to example.com in Firefox, and executes a script in the page context.

const { firefox } = require('playwright');

(async () => {
  const browser = await firefox.launch();
  const context = await browser.newContext();
  const page = await context.newPage();
  await page.goto('https://www.example.com/');
  const dimensions = await page.evaluate(() => {
    return {
      width: document.documentElement.clientWidth,
      height: document.documentElement.clientHeight,
      deviceScaleFactor: window.devicePixelRatio
    }
  });
  console.log(dimensions);

  await browser.close();
})();
Intercept network requests

This code snippet sets up request routing for a WebKit page to log all network requests.

const { webkit } = require('playwright');

(async () => {
  const browser = await webkit.launch();
  const context = await browser.newContext();
  const page = await context.newPage();

  // Log and continue all network requests
  await page.route('**', route => {
    console.log(route.request().url());
    route.continue();
  });

  await page.goto('http://todomvc.com');
  await browser.close();
})();

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Last updated on 10 Jan 2022

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