Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use trackValueOnNode method in Playwright Internal

Best JavaScript code snippet using playwright-internal

inputValueTracking.js

Source:inputValueTracking.js

...49      : node.value;50  }51  return value;52}53function trackValueOnNode(node : any, inst : any) : ?ValueTracker {54  var valueField = isCheckable(node) ? 'checked' : 'value';55  var descriptor = Object.getOwnPropertyDescriptor(56    node.constructor.prototype,57    valueField58  );59  var currentValue = '' + node[valueField];60  // if someone has already defined a value or Safari, then bail61  // and don't track value will cause over reporting of changes,62  // but it's better then a hard failure63  // (needed for certain tests that spyOn input values and Safari)64  if (65    node.hasOwnProperty(valueField) ||66    typeof descriptor.get !== 'function' ||67    typeof descriptor.set !== 'function'68  ) {69    return;70  }71  Object.defineProperty(node, valueField, {72    enumerable: descriptor.enumerable,73    configurable: true,74    get: function() {75      return descriptor.get.call(this);76    },77    set: function(value) {78      currentValue = '' + value;79      descriptor.set.call(this, value);80    },81  });82  var tracker = {83    getValue() {84      return currentValue;85    },86    setValue(value) {87      currentValue = '' + value;88    },89    stopTracking() {90      detachTracker(inst);91      delete node[valueField];92    },93  };94  return tracker;95}96var inputValueTracking = {97  // exposed for testing98  _getTrackerFromNode(node : ElementWithWrapperState) {99    return getTracker(100      ReactDOMComponentTree.getInstanceFromNode(node)101    );102  },103  trackNode: function(node : ElementWithWrapperState) {104    if (node._wrapperState.valueTracker) {105      return;106    }107    node._wrapperState.valueTracker = trackValueOnNode(node, node);108  },109  track: function(inst : InstanceWithWrapperState) {110    if (getTracker(inst)) {111      return;112    }113    var node = ReactDOMComponentTree.getNodeFromInstance(inst);114    attachTracker(inst, trackValueOnNode(node, inst));115  },116  updateValueIfChanged(inst : InstanceWithWrapperState | Fiber) {117    if (!inst) {118      return false;119    }120    var tracker = getTracker(inst);121    if (!tracker) {122      if (typeof (inst : any).tag === 'number') {123        inputValueTracking.trackNode((inst : any).stateNode);124      } else {125        inputValueTracking.track((inst : any));126      }127      return true;128    }...

secureElementProxyTestHelper.js

Source:secureElementProxyTestHelper.js

1({2    // Portion of React's trackValueOnNode.3    // See inputValueTracking.js4    // https://github.com/facebook/react/blob/master/packages/react-dom/src/client/inputValueTracking.js5    trackValueOnNode: function (node, valueField) {6        var descriptor = Object.getOwnPropertyDescriptor(7            node.constructor.prototype,8            valueField9        );10        var currentValue = '' + node[valueField];11        Object.defineProperty(node, valueField, {12            enumerable: descriptor.enumerable,13            configurable: true,14            get: function() {15                return descriptor.get.call(this);16            },17            set: function(value) {18                currentValue = '' + value;19                descriptor.set.call(this, value);20            },21        });22        function getValue() {23          return currentValue;24        };25        return getValue;26    }...

Using AI Code Generation

1const { chromium } = require('playwright');2const { trackValueOnNode } = require('playwright/lib/server/dom.js');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.fill('input[aria-label="Search"]', 'Playwright');8  const handle = await page.$('input[aria-label="Search"]');9  const value = await trackValueOnNode(handle);10  console.log(value);11  await browser.close();12})();13trackValueOnNode(handle);14const { chromium } = require('playwright');15const { trackValueOnNode } = require('playwright/lib/server/dom.js');16(async () => {17  const browser = await chromium.launch();18  const context = await browser.newContext();19  const page = await context.newPage();20  await page.click('input[aria-label="Search"]');21  await page.keyboard.press('Delete');22  const handle = await page.$('input[aria-label="Search"]');23  const value = await trackValueOnNode(handle);24  console.log(value);25  await browser.close();26})();

Using AI Code Generation

1const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  await trackValueOnNode(page, handle, 'click', () => console.log('Clicked'));7  await handle.click();8  await browser.close();9})();

Using AI Code Generation

1const { trackValueOnNode } = require('@playwright/test/lib/internal/inspectorInstrumentation');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.waitForSelector('text=Get started');8  await page.click('text=Get started');9  await page.waitForSelector('text=Create a test project');10  const element = await page.waitForSelector('text=Create a test project');11  trackValueOnNode(element, 'textContent', 'Create a test project');12  await page.click('text=Create a test project');13  await page.waitForSelector('text=Run your first test');14  await page.click('text=Run your firs

Using AI Code Generation

1const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');2const { chromium } = require('playwright-core');3(async () => {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  await page.waitForSelector('input[name="q"]');7  await trackValueOnNode(page, 'input[name="q"]', 'value', 'input');8  await page.type('input[name="q"]', 'Hello World!');9  await page.screenshot({ path: 'google.png' });10  await browser.close();11})();12module.exports = {13  use: {14  },15};16{17  "scripts": {18  },19  "dependencies": {20  }21}

Using AI Code Generation

1const {trackValueOnNode} = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');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  const element = await page.$('input');8  const value = await trackValueOnNode(element);9  console.log(value);10  await browser.close();11})();12const {helper} = require('../../helper');13const {ElementHandle} = require('../../dom');14const {createInstrumentationListener} = require('./instrumentationSupplement.js');15const {createValueTracker} = require('./valueTracker.js');16module.exports = {trackValueOnNode};17 * @param {!ElementHandle} elementHandle18 * @return {!Promise<string>}19async function trackValueOnNode(elementHandle) {20  const page = elementHandle._context._page;21  const instrumentationListener = await createInstrumentationListener(page);22  const valueTracker = await createValueTracker(instrumentationListener, elementHandle);23  await valueTracker.start();24  const result = await page.evaluate(element => element.value, elementHandle);25  await valueTracker.stop();26  return result;27}28const {helper} = require('../helper');29const {InstrumentationListener} = require('../instrumentation');30module.exports = {createInstrumentationListener};31 * @param {!Page} page32 * @return {!Promise<!InstrumentationListener>}33async function createInstrumentationListener(page) {34  const listener = new InstrumentationListener(page);35  await listener.install();36  return listener;37}38const {helper} = require('../helper');39const {InstrumentationListener} = require('../instrumentation');40const {createInstrumentationListener} = require('./instrumentationSupplement.js');41const {ElementHandle} = require('../

Using AI Code Generation

1const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');2const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');3const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');4const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');5const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');6const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');7const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');8const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');9const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');10const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');11const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');12const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');13const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');14const { trackValueOnNode } = require('playwright/lib/internal/inspectorInstrumentation');15const { trackValueOnNode }

Using AI Code Generation

1const { trackValueOnNode } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');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    const input = await page.$('input');8    await trackValueOnNode(page, input);9    await input.type('Hello World');10    await page.screenshot({ path: 'example.png' });11    await browser.close();12})();

Using AI Code Generation

1const { chromium } = require('playwright');2const { trackValueOnNode } = require('playwright/lib/server/trace/recorder/domSnapshot');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const input = await page.$('input[name="q"]');8  const snapshot = await page._delegate._pageProxy._browserContext._browser._pageProxy._frameManager._mainFrame._page._domSnapshotter.takeSnapshot('full', true);9  const value = trackValueOnNode(input, snapshot);10  console.log(value);11  await browser.close();12})();13const { chromium } = require('playwright');14const { trackValueOnNode } = require('playwright/lib/server/trace/recorder/domSnapshot');15(async () => {16  const browser = await chromium.launch();17  const context = await browser.newContext();18  const page = await context.newPage();19  const input = await page.$('input[name="q"]');20  const snapshot = await page._delegate._pageProxy._browserContext._browser._pageProxy._frameManager._mainFrame._page._domSnapshotter.takeSnapshot('full', true);21  const value = trackValueOnNode(input, snapshot);22  console.log(value);23  await browser.close();24})();

Using AI Code Generation

1const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');2const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');3const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');4const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');5const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');6const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');7const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');8const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');9const { chromium } = require('playwright-core');10(async () => {11const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');12const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');13const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');14const { trackValueOnNode } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');

Using AI Code Generation

1const {chromium} = require('playwright');2const {trackValueOnNode} = require('playwright/lib/internal/inspector').helper;3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.waitForSelector('input[type=text]');8  await trackValueOnNode(page, 'input[type=text]', (value) => {9      console.log(value);10  });11  await browser.close();12})();

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.