How to use parentElementOrShadowHostInContext method in Playwright Internal

Best JavaScript code snippet using playwright-internal

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false });4 const page = await browser.newPage();5 await page.click('text=Get started');6 await page.click('text=API reference');7 await page.click('text=Page');8 const pageElement = await page.$('text=Page');9 const parentElement = pageElement.parentElementOrShadowHostInContext();10 console.log(parentElement);11 await browser.close();12})();13ElementHandle {14 _initializer: {15 nodeInfo: { nodeId: 1, nodeName: 'HTML', nodeValue: '' }16 }17}

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false });4 const page = await browser.newPage();5 await page.click('text=Docs');6 await page.click('text=API');7 const elementHandle = await page.$('text=BrowserContext');8 const element = elementHandle._element;9 const parentElement = await element.parentElementOrShadowHostInContext();10 console.log(parentElement);11 await browser.close();12})();13ElementHandle {14 _element: Element {15 _context: BrowserContext {},16 _delegate: Element {},17 _page: Page {},18 _remoteObject: RemoteObject {},19 }20}

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1const {chromium, webkit, firefox} = require('playwright');2const assert = require('assert');3(async () => {4 for (const browserType of [chromium, webkit, firefox]) {5 const browser = await browserType.launch();6 const context = await browser.newContext();7 const page = await context.newPage();8 const element = await page.$('input[name="q"]');9 const shadowRoot = await page.evaluateHandle(element => element.shadowRoot, element);10 assert.equal(await shadowRoot.evaluate(element => element.tagName), 'DIV');11 assert.equal(await shadowRoot.evaluate(element => element.parentElementOrShadowHostInContext().tagName), 'INPUT');12 await browser.close();13 }14})();15 at DOMDispatcher._onMessage (/​Users/​xxx/​playwright/​packages/​playwright-core/​lib/​server/​dom.js:87:35)16 at Connection._onMessage (/​Users/​xxx/​playwright/​packages/​playwright-core/​lib/​server/​connection.js:200:24)17 at WebSocketTransport._ws.addEventListener.event (/​Users/​xxx/​playwright/​packages/​playwright-core/​lib/​server/​webSocketTransport.js:64:24)18 at WebSocket.onMessage (/​Users/​xxx/​playwright/​packages/​playwright-core/​lib/​server/​webSocket.js:43:22)19 at WebSocket.emit (events.js:315:20)20 at Receiver.receiverOnMessage (/​Users/​xxx/​playwright/​packages/​playwright-core/​node_modules/​ws/​lib/​websocket.js:800:20)21 at Receiver.emit (events.js:315:20)22 at Receiver.dataMessage (/​Users/​xxx/​playwright/​packages/​playwright-core/​node_modules/​ws/​lib/​receiver.js:437:14)23 at Receiver.getData (/​Users/​xxx/​playwright/​packages/​playwright-core/​node_modules/​ws/​lib/​receiver.js:367:17)24 at Receiver.startLoop (/​Users/​xxx/​playwright/​packages/​playwright-core/​node_modules/​ws/​lib/​receiver.js:153:22)

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1const element = await page.$('#elementId');2const parentElement = await page.evaluateHandle((element) => element.parentElementOrShadowHostInContext(), element);3await page.evaluate((parentElement) => parentElement.click(), parentElement);4const element = await page.$('#elementId');5const parentElement = await page.evaluateHandle((element) => element.parentElementOrShadowHost(), element);6await page.evaluate((parentElement) => parentElement.click(), parentElement);7const element = await page.$('#elementId');8const parentElement = await page.evaluateHandle((element) => element.parentElementOrShadowHost(), element);9await page.evaluate((parentElement) => parentElement.click(), parentElement);10const element = await page.$('#elementId');11const parentElement = await page.evaluateHandle((element) => element.parentElementOrShadowHost(), element);12await page.evaluate((parentElement) => parentElement.click(), parentElement);13const element = await page.$('#elementId');14const parentElement = await page.evaluateHandle((element) => element.parentElementOrShadowHost(), element);15await page.evaluate((parentElement) => parentElement.click(), parentElement);16const element = await page.$('#elementId');17const parentElement = await page.evaluateHandle((element) => element.parentElementOrShadowHost(), element);18await page.evaluate((parentElement) => parentElement.click(), parentElement);19const element = await page.$('#elementId');20const parentElement = await page.evaluateHandle((element) => element.parentElementOrShadowHost(), element);21await page.evaluate((parentElement) => parentElement.click(), parentElement);22const element = await page.$('#elementId');23const parentElement = await page.evaluateHandle((element) => element.parentElementOrShadowHost(), element);24await page.evaluate((parentElement) => parentElement.click(), parentElement);25const element = await page.$('#

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1const { parentElementOrShadowHostInContext } = require('@playwright/​test/​lib/​server/​frames/​elementHandler');2const element = await page.$('div');3const parentElement = await parentElementOrShadowHostInContext(element, page.mainContext());4console.log(parentElement);5await page.close();6const { parentElementOrShadowHostInContext } = require('@playwright/​test/​lib/​server/​frames/​elementHandler');7const element = await page.$('div');8const parentElement = await parentElementOrShadowHostInContext(element, page.mainContext());9console.log(parentElement);10await page.close();11const { parentElementOrShadowHostInContext } = require('@playwright/​test/​lib/​server/​frames/​elementHandler');12const element = await page.$('div');13const parentElement = await parentElementOrShadowHostInContext(element, page.mainContext());14console.log(parentElement);15await page.close();

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1const elementHandle = await page.$('button');2const elementHandleShadow = await page.$('button', {root: elementHandle});3const elementHandleShadow2 = await page.$('button', {root: elementHandleShadow});4const elementHandleShadow3 = await page.$('button', {root: elementHandleShadow2});5const elementHandleShadow4 = await page.$('button', {root: elementHandleShadow3});6const elementHandleShadow5 = await page.$('button', {root: elementHandleShadow4});7const elementHandleShadow6 = await page.$('button', {root: elementHandleShadow5});8const elementHandleShadow7 = await page.$('button', {root: elementHandleShadow6});9const elementHandleShadow8 = await page.$('button', {root: elementHandleShadow7});10const elementHandleShadow9 = await page.$('button', {root: elementHandleShadow8});11const elementHandleShadow10 = await page.$('button', {root: elementHandleShadow9});12const elementHandleShadow11 = await page.$('button', {root: elementHandleShadow10});13const elementHandleShadow12 = await page.$('button', {root: elementHandleShadow11});14const elementHandleShadow13 = await page.$('button', {root: elementHandleShadow12});15const elementHandleShadow14 = await page.$('button', {root: elementHandleShadow13});16const elementHandleShadow15 = await page.$('button', {root: elementHandleShadow14});17const elementHandleShadow16 = await page.$('button', {root: elementHandleShadow15});18const elementHandleShadow17 = await page.$('button', {root: elementHandleShadow16});19const elementHandleShadow18 = await page.$('button', {root: elementHandleShadow17});20const elementHandleShadow19 = await page.$('button', {root: elementHandleShadow18});21const elementHandleShadow20 = await page.$('button', {root: elementHandleShadow19});22const elementHandleShadow21 = await page.$('button', {root: elementHandleShadow20});23const elementHandleShadow22 = await page.$('button', {root: elementHandleShadow21});24const elementHandleShadow23 = await page.$('button', {root: elementHandleShadow22});25const elementHandleShadow24 = await page.$('button', {root: elementHandleShadow23});26const elementHandleShadow25 = await page.$('button

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1const { parentElementOrShadowHostInContext } = require('playwright/​lib/​server/​dom.js');2const parent = parentElementOrShadowHostInContext( document.body, 0, 0 );3console.log( parent );4const parent = parentElementOrShadowHostInContext( document.body, 100, 100 );5console.log( parent );6const parent = parentElementOrShadowHostInContext( document.body, 200, 200 );7console.log( parent );8const parent = parentElementOrShadowHostInContext( document.body, 300, 300 );9console.log( parent );10const parent = parentElementOrShadowHostInContext( document.body, 400, 400 );11console.log( parent );12const parent = parentElementOrShadowHostInContext( document.body, 500, 500 );13console.log( parent );14const parent = parentElementOrShadowHostInContext( document.body, 600, 600 );15console.log( parent );16const parent = parentElementOrShadowHostInContext( document.body, 700, 700 );17console.log( parent );18const parent = parentElementOrShadowHostInContext( document.body, 800, 800 );19console.log( parent );20const parent = parentElementOrShadowHostInContext( document.body, 900, 900 );21console.log( parent );22const parent = parentElementOrShadowHostInContext( document.body, 1000, 1000 );23console.log( parent );24const parent = parentElementOrShadowHostInContext( document.body, 1100, 1100 );25console.log( parent );

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StackOverFlow community discussions

Questions
Discussion

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?

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

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
})
https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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