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How to use scrollValueMonitor method in Playwright Internal
Best JavaScript code snippet using playwright-internal
ReactEventListener.js
Source: ReactEventListener.js 
...41 var topLevelTargetID = ReactMount.getID(topLevelTarget) || '';42 ReactEventListener._handleTopLevel(bookKeeping.topLevelType, topLevelTarget, topLevelTargetID, bookKeeping.nativeEvent);43 }44 }45 function scrollValueMonitor(cb) {46 var scrollPosition = getUnboundedScrollPosition(window);47 cb(scrollPosition);48 }49 var ReactEventListener = {50 _enabled: true,51 _handleTopLevel: null,52 WINDOW_HANDLE: ExecutionEnvironment.canUseDOM ? window : null,53 setHandleTopLevel: function(handleTopLevel) {54 ReactEventListener._handleTopLevel = handleTopLevel;55 },56 setEnabled: function(enabled) {57 ReactEventListener._enabled = !!enabled;58 },59 isEnabled: function() {...
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 await page.evaluate(() => {7 window.scrollBy(0, 1000);8 });9 const scrollValue = await page.evaluate(() => {10 return window.scrollY;11 });12 console.log(scrollValue);13 await browser.close();14})();
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 scrollValue = await page.evaluate(() => {7 const scrollValueMonitor = window.__playwright__internal__scrollValueMonitor;8 return scrollValueMonitor();9 });10 console.log(scrollValue);11 await browser.close();12})();13- returns: `{ x: number, y: number }`14[MIT](LICENSE)
Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false });4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.evaluate(() => {7 const scrollValueMonitor = (scrollValue, isVertical) => {8 console.log(scrollValue, isVertical);9 };10 window.scrollValueMonitor = scrollValueMonitor;11 });12 await page.evaluate(() => {13 window.addEventListener('scroll', () => {14 const scrollValue = window.scrollY;15 const isVertical = true;16 window.scrollValueMonitor(scrollValue, isVertical);17 });18 });19 await page.evaluate(() => {20 window.addEventListener('wheel', (event) => {21 const scrollValue = event.deltaY;22 const isVertical = true;23 window.scrollValueMonitor(scrollValue, isVertical);24 });25 });26 await page.evaluate(() => {27 window.addEventListener('mousewheel', (event) => {28 const scrollValue = event.deltaY;29 const isVertical = true;30 window.scrollValueMonitor(scrollValue, isVertical);31 });32 });33 await page.evaluate(() => {34 window.addEventListener('DOMMouseScroll', (event) => {35 const scrollValue = event.detail;36 const isVertical = true;37 window.scrollValueMonitor(scrollValue, isVertical);38 });39 });40 await page.evaluate(() => {41 window.addEventListener('keydown', (event) => {42 const scrollValue = 0;43 const isVertical = true;44 if (event.key === 'ArrowUp') {45 scrollValue = -100;46 } else if (event.key === 'ArrowDown') {47 scrollValue = 100;48 }49 window.scrollValueMonitor(scrollValue, isVertical);50 });51 });52})();
Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false });4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.evaluate(() => {7 window.scrollBy(0, document.body.scrollHeight);8 });9 await page.waitForFunction(() => {10 document.scrollingElement.scrollHeight;11 });12 const scrollValue = await page.evaluate(() => {13 return document.scrollingElement.scrollTop;14 });15 console.log(scrollValue);16 await browser.close();17})();
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 await page.evaluate(async () => {7 const { scrollValueMonitor } = window['playwright']._internalApi;8 const monitor = scrollValueMonitor();9 monitor.on('scroll', ({ x, y }) => {10 console.log(`Scroll position: ${x}x${y}`);11 });12 await new Promise(f => setTimeout(f, 5000));13 monitor.dispose();14 });15 await browser.close();16})();17### scrollValueMonitor()18#### scrollValueMonitor.on(event, handler)19#### scrollValueMonitor.dispose()20[Apache 2.0](LICENSE)
Using AI Code Generation
1const playwright = require('playwright');2(async () => {3 const browser = await playwright['chromium'].launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.evaluate(() => {7 const scrollValueMonitor = window['_playwright'].scrollValueMonitor;8 scrollValueMonitor.setScrollPosition(0, 100);9 scrollValueMonitor.setScrollPosition(100, 100);10 scrollValueMonitor.setScrollPosition(100, 0);11 scrollValueMonitor.setScrollPosition(0, 0);12 scrollValueMonitor.setScrollPosition(0, 100);13 scrollValueMonitor.setScrollPosition(100, 100);14 scrollValueMonitor.setScrollPosition(100, 0);15 scrollValueMonitor.setScrollPosition(0, 0);16 });17 await page.screenshot({ path: `example.png` });18 await browser.close();19})();
Using AI Code Generation
1const { chromium, webkit, firefox } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 const scrollValue = await page.evaluate(() => {7 return window.scrollY;8 });9 console.log(scrollValue);10 await browser.close();11})();
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 scrollPosition = await page.evaluate(() => {7 return window.scrollY;8 });9 console.log(scrollPosition);10 await browser.close();11})();12const { chromium } = require('playwright');13(async () => {14 const browser = await chromium.launch();15 const context = await browser.newContext();16 const page = await context.newPage();17 const scrollPosition = await page.evaluate(() => {18 return window.scrollY;19 });20 console.log(scrollPosition);21 await browser.close();22})();23const { chromium } = require('playwright');24(async () => {25 const browser = await chromium.launch();26 const context = await browser.newContext();27 const page = await context.newPage();28 const scrollPosition = await page.evaluate(() => {29 return window.scrollY;30 });31 console.log(scrollPosition);32 await browser.close();33})();34const { chromium } = require('playwright');35(async () => {36 const browser = await chromium.launch();37 const context = await browser.newContext();38 const page = await context.newPage();39 const scrollPosition = await page.evaluate(() => {40 return window.scrollY;41 });42 console.log(scrollPosition);43 await browser.close();44})();45const { chromium } = require('playwright');46(async () => {47 const browser = await chromium.launch();48 const context = await browser.newContext();49 const page = await context.newPage();
Using AI Code Generation
1const playwright = require('playwright');2(async () => {3 for (const browserType of BROWSER) {4 const browser = await playwright[browserType].launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 await page.evaluate(async () => {8 await new Promise((resolve) => {9 window.scrollValueMonitor = (x, y) => {10 console.log(`Scroll position: ${x}, ${y}`);11 if (y > 100) resolve();12 };13 });14 });15 await page.mouse.wheel({ deltaY: 1000 });16 await browser.close();17 }18})();19[MIT](
Using AI Code Generation
1const { chromium } = require('playwright');2const scrollValueMonitor = require('playwright/lib/internal/scrollValueMonitor');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 await page.setViewportSize({ width: 1280, height: 800 });8 await page.type('input[title="Search"]', 'Playwright');9 await page.keyboard.press('Enter');10 await page.waitForSelector('text=Playwright - Google Search');11 await page.waitForTimeout(2000);12 const scrollValue = scrollValueMonitor.getScrollValue(page);13 console.log(scrollValue);14 await browser.close();15})();
StackOverFlow community discussions
Jest + Playwright - Test callbacks of event-based DOM library
firefox browser does not start in playwright
How to run a list of test suites in a single file concurrently in jest?
Running Playwright in Azure Function
firefox browser does not start in playwright
Is it possible to get the selector from a locator object 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:
This article is a part of our Content Hub. For more in-depth resources, check out our content hub on Mobile App Testing Tutorial.
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Have you ever struggled with handling hidden elements while automating a web or mobile application? I was recently automating an eCommerce application. I struggled with handling hidden elements on the web page.
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.
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