Discover AI-native insights at Testμ Conference‘25
How to use ForEachBookKeeping method in Playwright Internal
Best JavaScript code snippet using playwright-internal
ReactChildren.js
Source: ReactChildren.js 
...28 * @constructor ForEachBookKeeping29 * @param {!function} forEachFunction Function to perform traversal with.30 * @param {?*} forEachContext Context to perform context with.31 */32function ForEachBookKeeping(forEachFunction, forEachContext) {33 this.forEachFunction = forEachFunction;34 this.forEachContext = forEachContext;35}36PooledClass.addPoolingTo(ForEachBookKeeping, twoArgumentPooler);37function forEachSingleChild(traverseContext, child, name, i) {38 var forEachBookKeeping = traverseContext;39 forEachBookKeeping.forEachFunction.call(40 forEachBookKeeping.forEachContext, child, i);41}42/**43 * Iterates through children that are typically specified as `props.children`.44 *45 * The provided forEachFunc(child, index) will be called for each46 * leaf child....
f471c2ReactChildren.js
Source: f471c2ReactChildren.js
...8var userProvidedKeyEscapeRegex=/\/+/g;9function escapeUserProvidedKey(text){10return(''+text).replace(userProvidedKeyEscapeRegex,'$&/');11}12function ForEachBookKeeping(forEachFunction,forEachContext){13this.func=forEachFunction;14this.context=forEachContext;15this.count=0;16}17ForEachBookKeeping.prototype.destructor=function(){18this.func=null;19this.context=null;20this.count=0;21};22PooledClass.addPoolingTo(ForEachBookKeeping,twoArgumentPooler);23function forEachSingleChild(bookKeeping,child,name){24var func=bookKeeping.func,25context=bookKeeping.context;26func.call(context,child,bookKeeping.count++);...
ReactChildren.src.js
Source: ReactChildren.src.js
...6 var traverseAllChildren = require("./traverseAllChildren");7 var warning = require("./warning");8 var twoArgumentPooler = PooledClass.twoArgumentPooler;9 var threeArgumentPooler = PooledClass.threeArgumentPooler;10 function ForEachBookKeeping(forEachFunction, forEachContext) {11 this.forEachFunction = forEachFunction;12 this.forEachContext = forEachContext;13 }14 PooledClass.addPoolingTo(ForEachBookKeeping, twoArgumentPooler);15 function forEachSingleChild(traverseContext, child, name, i) {16 var forEachBookKeeping = traverseContext;17 forEachBookKeeping.forEachFunction.call(forEachBookKeeping.forEachContext, child, i);18 }19 function forEachChildren(children, forEachFunc, forEachContext) {20 if (children == null) {21 return children;22 }23 var traverseContext = ForEachBookKeeping.getPooled(forEachFunc, forEachContext);24 traverseAllChildren(children, forEachSingleChild, traverseContext);...
Using AI Code Generation
1const {chromium} = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 const client = await page.context().newCDPSession(page);7 await client.send('Page.enable');8 await client.send('Page.setLifecycleEventsEnabled', { enabled: true });9 await client.send('Page.setDownloadBehavior', { behavior: 'allow', downloadPath: '/tmp' });10 await client.send('Page.loadEventFired');11 await client.send('Page.loadEventFired');12 await client.send('Page.loadEventFired');13 await client.send('Page.loadEventFired');14 await client.send('Page.loadEventFired');15 await client.send('Page.loadEventFired');16 await client.send('Page.loadEventFired');17 await client.send('Page.loadEventFired');18 await client.send('Page.loadEventFired');19 await client.send('Page.loadEventFired');20 await client.send('Page.loadEventFired');21 await client.send('Page.loadEventFired');22 await client.send('Page.loadEventFired');
Using AI Code Generation
1const { forEachBookKeeping } = require('playwright/lib/server/frames');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 await page.waitForLoadState('networkidle');8 const urls = [];9 forEachBookKeeping(page.mainFrame(), frame => {10 urls.push(frame.url());11 });12 console.log(urls);13 await browser.close();14})();
Using AI Code Generation
1const { ForEachBookKeeping } = require('playwright/lib/utils/async');2const { Page } = require('playwright/lib/server/page');3const { BrowserContext } = require('playwright/lib/server/browserContext');4const { Browser } = require('playwright/lib/server/browser');5const browser = await Browser.connect({6});7const context = await browser.newContext();8const page = await context.newPage();9const forEachBookKeeping = new ForEachBookKeeping();10const forEachBookKeeping2 = new ForEachBookKeeping();11const pageForEach = page.forEachBookKeeping();12const contextForEach = context.forEachBookKeeping();13const browserForEach = browser.forEachBookKeeping();14console.log('pageForEach', pageForEach);15console.log('contextForEach', contextForEach);16console.log('browserForEach', browserForEach);17pageForEach.forEachBookKeeping();18contextForEach.forEachBookKeeping();19browserForEach.forEachBookKeeping();20forEachBookKeeping.forEachBookKeeping();21forEachBookKeeping2.forEachBookKeeping();
Using AI Code Generation
1const { ForEachBookKeeping } = require('playwright/lib/server/frames');2const { Page } = require('playwright/lib/server/page');3const { Frame } = require('playwright/lib/server/frame');4const { JSHandle } = require('playwright/lib/server/jsHandle');5const customFunction = (element) => {6 console.log('element:', element);7};8const customFunctionWithHandle = (element) => {9 console.log('element:', element);10 return element;11};12const customFunctionWithJSHandle = (element) => {13 console.log('element:', element);14 return element;15};16const customFunctionWithIndex = (element, index) => {17 console.log('element:', element);18 console.log('index:', index);19};20const customFunctionWithJSHandleAndIndex = (element, index) => {21 console.log('element:', element);22 console.log('index:', index);23 return element;24};25const customFunctionWithHandleAndIndex = (element, index) => {26 console.log('element:', element);27 console.log('index:', index);28 return element;29};30const customFunctionWithHandleAndJSHandleAndIndex = (element, index
Using AI Code Generation
1const { forEachBookKeeping } = require('playwright/lib/server/supplements/recorder/recorderSupplement');2const { Page } = require('playwright/lib/server/page');3Page.prototype.forEachBookKeeping = forEachBookKeeping;4const { forEachBookKeeping } = require('playwright/lib/server/supplements/recorder/recorderSupplement');5const { Page } = require('playwright/lib/server/page');6Page.prototype.forEachBookKeeping = forEachBookKeeping;7const { forEachBookKeeping } = require('playwright/lib/server/supplements/recorder/recorderSupplement');8const { Page } = require('playwright/lib/server/page');9Page.prototype.forEachBookKeeping = forEachBookKeeping;10const { forEachBookKeeping } = require('playwright/lib/server/supplements/recorder/recorderSupplement');11const { Page } = require('playwright/lib/server/page');12Page.prototype.forEachBookKeeping = forEachBookKeeping;13const { forEachBookKeeping } = require('playwright/lib/server/supplements/recorder/recorderSupplement');14const { Page } = require('playwright/lib/server/page');15Page.prototype.forEachBookKeeping = forEachBookKeeping;16const { forEachBookKeeping } = require('playwright/lib/server/supplements/recorder/recorderSupplement');17const { Page } = require('playwright/lib/server/page');18Page.prototype.forEachBookKeeping = forEachBookKeeping;19const { forEachBookKeeping } = require('playwright/lib/server/supplements/recorder/recorderSupplement');
Using AI Code Generation
1const { ForEachBookKeeping } = require('@playwright/test/lib/test');2const { test } = require('@playwright/test');3test('My Test', async ({ page }) => {4 const bk = new ForEachBookKeeping();5 const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];6 await bk.forEach(arr, async (item) => {7 console.log(item);8 });9});10const { devices } = require('@playwright/test');11const { devices: devicesPuppeteer } = require('playwright');12module.exports = {13 use: {14 viewport: { width: 1280, height: 720 },15 },16 {17 use: {18 },19 },20 {21 use: {22 },23 },24 {25 use: {26 },27 },28};
Using AI Code Generation
1const { ForEachBookKeeping } = require('playwright/lib/client/frames');2const { Page } = require('playwright/lib/server/page');3const { Frame } = require('playwright/lib/server/frame');4const { ElementHandle } = require('playwright/lib/server/dom');5const { JSHandle } = require('playwright/lib/server/jsHandle');6const { forEachBookKeeping } = new ForEachBookKeeping();7const { page } = new Page();8const { frame } = new Frame(page);9const { elementHandle } = new ElementHandle(frame);10const { jsHandle } = new JSHandle(elementHandle);11const { forEachBookKeeping } = new ForEachBookKeeping();12const { jsHandle } = new JSHandle(elementHandle);13jsHandle.forEachBookKeeping = forEachBookKeeping;14jsHandle.forEachBookKeeping.set(jsHandle);15jsHandle.forEachBookKeeping.set(jsHandle);16jsHandle.forEachBookKeeping.set(jsHandle);17jsHandle.forEachBookKeeping.delete(jsHandle);18jsHandle.forEachBookKeeping.delete(jsHandle);19jsHandle.forEachBookKeeping.delete(jsHandle);20jsHandle.forEachBookKeeping.clear();21[...jsHandle.forEachBookKeeping].forEach((jsHandle) => {22 console.log(jsHandle);23});
Using AI Code Generation
1const { Page } = require('@playwright/test');2const { forEachBookKeeping } = require('@playwright/test/lib/server/frames');3(async () => {4 await page.evaluate(() => {5 forEachBookKeeping((bookKeeping) => {6 console.log(bookKeeping);7 });8 });9 await page.close();10})();11const { Page } = require('@playwright/test');12const { forEachBookKeeping } = require('@playwright/test/lib/server/frames');13(async () => {14 await page.evaluate(() => {15 forEachBookKeeping((bookKeeping) => {16 console.log(bookKeeping);17 });18 });19 await page.close();20})();21const { Page } = require('@playwright/test');22const { forEachBookKeeping } = require('@playwright/test/lib/server/frames');23(async () => {24 await page.evaluate(() => {25 forEachBookKeeping((bookKeeping) => {26 console.log(bookKeeping);27 });28 });29 await page.close();30})();
Using AI Code Generation
1const { ForEachBookKeeping } = require('playwright/lib/utils/async');2const { forEach } = require('playwright/lib/utils/async');3const fbk = new ForEachBookKeeping();4const arr = [1, 2, 3];5forEach(arr, (item) => {6 fbk.add(async () => {7 await Promise.resolve();8 console.log(item);9 });10});11fbk.run();
Using AI Code Generation
1const { ForEachBookKeeping } = require('playwright/lib/server/chromium/crBrowser');2const browser = await chromium.launch();3const context = await browser.newContext();4const page = await context.newPage();5await page.screenshot({ path: 'google.png' });6const pages = [];7ForEachBookKeeping.call(context, (page) => pages.push(page));8console.log(pages);9await browser.close();10 Page {11 _browserContext: BrowserContext {12 },13 _pageBindings: Map(0) {},14 _closedPromise: Promise { <pending> },15 _disconnectedPromise: Promise { <pending> },16 _closePromise: Promise { <pending> },
StackOverFlow community discussions
Jest + Playwright - Test callbacks of event-based DOM library
firefox browser does not start in playwright
Is it possible to get the selector from a locator object in playwright?
Running Playwright in Azure Function
How to run a list of test suites in a single file concurrently in jest?
firefox browser does not start in playwright
This question is quite close to a "need more focus" question. But let's try to give it some focus:
Does Playwright has access to the cPicker object on the page? Does it has access to the window object?
Yes, you can access both cPicker and the window object inside an evaluate call.
Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?
Exactly, or you can assign values to a javascript variable:
const cPicker = new ColorPicker({
onClickOutside(e){
},
onInput(color){
window['color'] = color;
},
onChange(color){
window['result'] = color;
}
})
And then
it('Should call all callbacks with correct arguments', async() => {
await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})
// Wait until the next frame
await page.evaluate(() => new Promise(requestAnimationFrame))
// Act
// Assert
const result = await page.evaluate(() => window['color']);
// Check the value
})
Blogs
Check out the latest blogs from LambdaTest on this topic:
Mobile devices and mobile applications – both are booming in the world today. The idea of having the power of a computer in your pocket is revolutionary. As per Statista, mobile accounts for more than half of the web traffic worldwide. Mobile devices (excluding tablets) contributed to 54.4 percent of global website traffic in the fourth quarter of 2021, increasing consistently over the past couple of years.
Technical debt was originally defined as code restructuring, but in today’s fast-paced software delivery environment, it has evolved. Technical debt may be anything that the software development team puts off for later, such as ineffective code, unfixed defects, lacking unit tests, excessive manual tests, or missing automated tests. And, like financial debt, it is challenging to pay back.
Testing is a critical step in any web application development process. However, it can be an overwhelming task if you don’t have the right tools and expertise. A large percentage of websites still launch with errors that frustrate users and negatively affect the overall success of the site. When a website faces failure after launch, it costs time and money to fix.
The QA testing career includes following an often long, winding road filled with fun, chaos, challenges, and complexity. Financially, the spectrum is broad and influenced by location, company type, company size, and the QA tester’s experience level. QA testing is a profitable, enjoyable, and thriving career choice.
Manual cross browser testing is neither efficient nor scalable as it will take ages to test on all permutations & combinations of browsers, operating systems, and their versions. Like every developer, I have also gone through that ‘I can do it all phase’. But if you are stuck validating your code changes over hundreds of browsers and OS combinations then your release window is going to look even shorter than it already is. This is why automated browser testing can be pivotal for modern-day release cycles as it speeds up the entire process of cross browser compatibility.
Playwright tutorial
LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.
Chapters:
- What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
- How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
- Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
- What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
- Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
- Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
- Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
- Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
- Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
- Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
- Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
- Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.
Run Playwright Internal automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
