Discover AI-native insights at Testμ Conference‘25

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})();

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.

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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.
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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.
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