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How to use shouldUseChangeEvent method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ChangeEventPlugin.js

...21  var activeElement = null;22  var activeElementID = null;23  var activeElementValue = null;24  var activeElementValueProp = null;25  function shouldUseChangeEvent(elem) {26    return (elem.nodeName === 'SELECT' || (elem.nodeName === 'INPUT' && elem.type === 'file'));27  }28  var doesChangeEventBubble = false;29  if (ExecutionEnvironment.canUseDOM) {30    doesChangeEventBubble = isEventSupported('change') && ((!('documentMode' in document) || document.documentMode > 8));31  }32  function manualDispatchChangeEvent(nativeEvent) {33    var event = SyntheticEvent.getPooled(eventTypes.change, activeElementID, nativeEvent);34    EventPropagators.accumulateTwoPhaseDispatches(event);35    ReactUpdates.batchedUpdates(runEventInBatch, event);36  }37  function runEventInBatch(event) {38    EventPluginHub.enqueueEvents(event);39    EventPluginHub.processEventQueue();40  }41  function startWatchingForChangeEventIE8(target, targetID) {42    activeElement = target;43    activeElementID = targetID;44    activeElement.attachEvent('onchange', manualDispatchChangeEvent);45  }46  function stopWatchingForChangeEventIE8() {47    if (!activeElement) {48      return;49    }50    activeElement.detachEvent('onchange', manualDispatchChangeEvent);51    activeElement = null;52    activeElementID = null;53  }54  function getTargetIDForChangeEvent(topLevelType, topLevelTarget, topLevelTargetID) {55    if (topLevelType === topLevelTypes.topChange) {56      return topLevelTargetID;57    }58  }59  function handleEventsForChangeEventIE8(topLevelType, topLevelTarget, topLevelTargetID) {60    if (topLevelType === topLevelTypes.topFocus) {61      stopWatchingForChangeEventIE8();62      startWatchingForChangeEventIE8(topLevelTarget, topLevelTargetID);63    } else if (topLevelType === topLevelTypes.topBlur) {64      stopWatchingForChangeEventIE8();65    }66  }67  var isInputEventSupported = false;68  if (ExecutionEnvironment.canUseDOM) {69    isInputEventSupported = isEventSupported('input') && ((!('documentMode' in document) || document.documentMode > 9));70  }71  var newValueProp = {72    get: function() {73      return activeElementValueProp.get.call(this);74    },75    set: function(val) {76      activeElementValue = '' + val;77      activeElementValueProp.set.call(this, val);78    }79  };80  function startWatchingForValueChange(target, targetID) {81    activeElement = target;82    activeElementID = targetID;83    activeElementValue = target.value;84    activeElementValueProp = Object.getOwnPropertyDescriptor(target.constructor.prototype, 'value');85    Object.defineProperty(activeElement, 'value', newValueProp);86    activeElement.attachEvent('onpropertychange', handlePropertyChange);87  }88  function stopWatchingForValueChange() {89    if (!activeElement) {90      return;91    }92    delete activeElement.value;93    activeElement.detachEvent('onpropertychange', handlePropertyChange);94    activeElement = null;95    activeElementID = null;96    activeElementValue = null;97    activeElementValueProp = null;98  }99  function handlePropertyChange(nativeEvent) {100    if (nativeEvent.propertyName !== 'value') {101      return;102    }103    var value = nativeEvent.srcElement.value;104    if (value === activeElementValue) {105      return;106    }107    activeElementValue = value;108    manualDispatchChangeEvent(nativeEvent);109  }110  function getTargetIDForInputEvent(topLevelType, topLevelTarget, topLevelTargetID) {111    if (topLevelType === topLevelTypes.topInput) {112      return topLevelTargetID;113    }114  }115  function handleEventsForInputEventIE(topLevelType, topLevelTarget, topLevelTargetID) {116    if (topLevelType === topLevelTypes.topFocus) {117      stopWatchingForValueChange();118      startWatchingForValueChange(topLevelTarget, topLevelTargetID);119    } else if (topLevelType === topLevelTypes.topBlur) {120      stopWatchingForValueChange();121    }122  }123  function getTargetIDForInputEventIE(topLevelType, topLevelTarget, topLevelTargetID) {124    if (topLevelType === topLevelTypes.topSelectionChange || topLevelType === topLevelTypes.topKeyUp || topLevelType === topLevelTypes.topKeyDown) {125      if (activeElement && activeElement.value !== activeElementValue) {126        activeElementValue = activeElement.value;127        return activeElementID;128      }129    }130  }131  function shouldUseClickEvent(elem) {132    return (elem.nodeName === 'INPUT' && (elem.type === 'checkbox' || elem.type === 'radio'));133  }134  function getTargetIDForClickEvent(topLevelType, topLevelTarget, topLevelTargetID) {135    if (topLevelType === topLevelTypes.topClick) {136      return topLevelTargetID;137    }138  }139  var ChangeEventPlugin = {140    eventTypes: eventTypes,141    extractEvents: function(topLevelType, topLevelTarget, topLevelTargetID, nativeEvent) {142      var getTargetIDFunc,143          handleEventFunc;144      if (shouldUseChangeEvent(topLevelTarget)) {145        if (doesChangeEventBubble) {146          getTargetIDFunc = getTargetIDForChangeEvent;147        } else {148          handleEventFunc = handleEventsForChangeEventIE8;149        }150      } else if (isTextInputElement(topLevelTarget)) {151        if (isInputEventSupported) {152          getTargetIDFunc = getTargetIDForInputEvent;153        } else {154          getTargetIDFunc = getTargetIDForInputEventIE;155          handleEventFunc = handleEventsForInputEventIE;156        }157      } else if (shouldUseClickEvent(topLevelTarget)) {158        getTargetIDFunc = getTargetIDForClickEvent;...

Input.js

Source: Input.js

...92  const nodeName = getNodeName(elem);93  const type = (elem: any).type;94  return nodeName === 'input' && (type === 'checkbox' || type === 'radio');95}96function shouldUseChangeEvent(elem: Element | Document): boolean {97  const nodeName = getNodeName(elem);98  return (99    nodeName === 'select' ||100    (nodeName === 'input' && (elem: any).type === 'file')101  );102}103function dispatchChangeEvent(104  context: ReactDOMResponderContext,105  props: InputResponderProps,106  target: Element | Document,107): void {108  const onValueChange = props.onValueChange;109  if (isFunction(onValueChange)) {110    const value = getValueFromNode(target);111    context.dispatchEvent(value, onValueChange, DiscreteEvent);112  }113}114function dispatchBothChangeEvents(115  event: ReactDOMResponderEvent,116  context: ReactDOMResponderContext,117  props: InputResponderProps,118  target: Document | Element,119): void {120  context.enqueueStateRestore(target);121  const onChange = props.onChange;122  if (isFunction(onChange)) {123    dispatchInputEvent(event, onChange, context, 'change', target);124  }125  dispatchChangeEvent(context, props, target);126}127function updateValueIfChanged(elem: Element | Document): boolean {128  // React's internal value tracker129  const valueTracker = (elem: any)._valueTracker;130  if (valueTracker == null) {131    return true;132  }133  const prevValue = valueTracker.getValue();134  const nextValue = getValueFromNode(elem);135  if (prevValue !== nextValue) {136    valueTracker.setValue(nextValue);137    return true;138  }139  return false;140}141function getValueFromNode(node: Element | Document): string {142  let value = '';143  if (!node) {144    return value;145  }146  if (isCheckable(node)) {147    value = (node: any).checked ? 'true' : 'false';148  } else {149    value = (node: any).value;150  }151  return value;152}153const inputResponderImpl = {154  targetEventTypes,155  onEvent(156    event: ReactDOMResponderEvent,157    context: ReactDOMResponderContext,158    props: InputResponderProps,159  ): void {160    const {type, target} = event;161    if (props.disabled) {162      return;163    }164    const currentTarget = context.getResponderNode();165    if (target !== currentTarget || currentTarget === null) {166      return;167    }168    switch (type) {169      default: {170        if (shouldUseChangeEvent(target) && type === 'change') {171          dispatchBothChangeEvents(event, context, props, currentTarget);172        } else if (173          isTextInputElement(target) &&174          (type === 'input' || type === 'change') &&175          updateValueIfChanged(target)176        ) {177          dispatchBothChangeEvents(event, context, props, currentTarget);178        } else if (179          isCheckable(target) &&180          type === 'click' &&181          updateValueIfChanged(target)182        ) {183          dispatchBothChangeEvents(event, context, props, currentTarget);184        }...

input.development.js

Source: input.development.js

...50  var nodeName = getNodeName(elem);51  var type = elem.type;52  return nodeName === 'input' && (type === 'checkbox' || type === 'radio');53}54function shouldUseChangeEvent(elem) {55  var nodeName = getNodeName(elem);56  return nodeName === 'select' || nodeName === 'input' && elem.type === 'file';57}58function dispatchChangeEvent(context, props, target) {59  var onValueChange = props.onValueChange;60  if (isFunction(onValueChange)) {61    var _value = getValueFromNode(target);62    context.dispatchEvent(_value, onValueChange, DiscreteEvent);63  }64}65function dispatchBothChangeEvents(event, context, props, target) {66  context.enqueueStateRestore(target);67  var onChange = props.onChange;68  if (isFunction(onChange)) {69    dispatchInputEvent(event, onChange, context, 'change', target);70  }71  dispatchChangeEvent(context, props, target);72}73function updateValueIfChanged(elem) {74  // React's internal value tracker75  var valueTracker = elem._valueTracker;76  if (valueTracker == null) {77    return true;78  }79  var prevValue = valueTracker.getValue();80  var nextValue = getValueFromNode(elem);81  if (prevValue !== nextValue) {82    valueTracker.setValue(nextValue);83    return true;84  }85  return false;86}87function getValueFromNode(node) {88  var value = '';89  if (!node) {90    return value;91  }92  if (isCheckable(node)) {93    value = node.checked ? 'true' : 'false';94  } else {95    value = node.value;96  }97  return value;98}99var inputResponderImpl = {100  targetEventTypes: targetEventTypes,101  onEvent: function (event, context, props) {102    var type = event.type,103        target = event.target;104    if (props.disabled) {105      return;106    }107    var currentTarget = context.getResponderNode();108    if (target !== currentTarget || currentTarget === null) {109      return;110    }111    switch (type) {112      default:113        {114          if (shouldUseChangeEvent(target) && type === 'change') {115            dispatchBothChangeEvents(event, context, props, currentTarget);116          } else if (isTextInputElement(target) && (type === 'input' || type === 'change') && updateValueIfChanged(target)) {117            dispatchBothChangeEvents(event, context, props, currentTarget);118          } else if (isCheckable(target) && type === 'click' && updateValueIfChanged(target)) {119            dispatchBothChangeEvents(event, context, props, currentTarget);120          }121          break;122        }123    }124  }125};126var InputResponder = React.unstable_createResponder('Input', inputResponderImpl);127function useInput(props) {128  return React.unstable_useResponder(InputResponder, props);...

Using AI Code Generation

1const { shouldUseChangeEvent } = require('playwright/lib/internal/keyboard');2const { webkit } = require('playwright');3(async () => {4  const browser = await webkit.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.click('input[aria-label="Search"]');8  await page.keyboard.type('playwright');9  await page.keyboard.press('Enter');10  await page.waitForSelector('text=Playwright');11  await browser.close();12})();

Using AI Code Generation

1const { shouldUseChangeEvent } = require('playwright/lib/server/frames');2const { Page } = require('playwright/lib/server/page');3const { Frame } = require('playwright/lib/server/frames');4const { ElementHandle } = require('playwright/lib/server/dom');5const page = new Page();6const frame = new Frame(page);7const elementHandle = new ElementHandle(frame);8console.log(shouldUseChangeEvent(elementHandle));

Using AI Code Generation

1const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');2console.log(shouldUseChangeEvent('input', 'value'));3const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');4console.log(shouldUseChangeEvent('input', 'value'));5const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');6console.log(shouldUseChangeEvent('input', 'value'));7const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');8console.log(shouldUseChangeEvent('input', 'value'));9const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');10console.log(shouldUseChangeEvent('input', 'value'));11const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');12console.log(shouldUseChangeEvent('input', 'value'));13const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');14console.log(shouldUseChangeEvent('input', 'value'));15const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');16console.log(shouldUseChangeEvent('input', 'value'));17const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');18console.log(shouldUseChangeEvent('input', 'value'));19const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');20console.log(shouldUseChangeEvent('input', 'value'));21const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');22console.log(shouldUseChangeEvent('input', 'value'));23const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');24console.log(shouldUseChangeEvent('input', 'value'));25const { shouldUseChangeEvent } = require('playwright/lib/utils/utils');26console.log(

Using AI Code Generation

1const { shouldUseChangeEvent } = require('playwright/lib/server/frames');2shouldUseChangeEvent('input', 'value', 'foo');3const { shouldUseChangeEvent } = require('playwright/lib/server/frames');4shouldUseChangeEvent('input', 'value', 'foo');5const { shouldUseChangeEvent } = require('playwright/lib/server/frames');6shouldUseChangeEvent('input', 'value', 'foo');7const { shouldUseChangeEvent } = require('playwright/lib/server/frames');8shouldUseChangeEvent('input', 'value', 'foo');9const { shouldUseChangeEvent } = require('playwright/lib/server/frames');10shouldUseChangeEvent('input', 'value', 'foo');11const { shouldUseChangeEvent } = require('playwright/lib/server/frames');12shouldUseChangeEvent('input', 'value', 'foo');13const { shouldUseChangeEvent } = require('playwright/lib/server/frames');14shouldUseChangeEvent('input', 'value', 'foo');15const { shouldUseChangeEvent } = require('playwright/lib/server/frames');16shouldUseChangeEvent('input', 'value', 'foo');17const { shouldUseChangeEvent } = require('playwright/lib/server/frames');18shouldUseChangeEvent('input', 'value', 'foo');19const { shouldUseChangeEvent } = require('playwright/lib/server/frames');20shouldUseChangeEvent('input', 'value', 'foo');21const { shouldUseChangeEvent } = require('playwright/lib/server/frames');22shouldUseChangeEvent('input', 'value', 'foo');23const { shouldUseChangeEvent } = require('playwright/lib/server/frames');24shouldUseChangeEvent('input', 'value', 'foo');

Using AI Code Generation

1const { shouldUseChangeEvent } = 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.fill('input[name="q"]', 'Hello World');8  await page.keyboard.press('Enter');9  await page.screenshot({ path: 'google.png' });10  await browser.close();11})();

Using AI Code Generation

1const { shouldUseChangeEvent, shouldUseInputEvent } = require('playwright/lib/internal/protocol');2console.log(shouldUseChangeEvent({ tagName: 'input', type: 'radio' }));3console.log(shouldUseChangeEvent({ tagName: 'input', type: 'checkbox' }));4console.log(shouldUseChangeEvent({ tagName: 'input', type: 'text' }));5console.log(shouldUseChangeEvent({ tagName: 'select' }));6console.log(shouldUseChangeEvent({ tagName: 'textarea' }));7console.log(shouldUseChangeEvent({ tagName: 'div' }));8console.log(shouldUseChangeEvent({ tagName: 'input', type: 'file' }));9console.log(shouldUseInputEvent({ tagName: 'input', type: 'radio' }));10console.log(shouldUseInputEvent({ tagName: 'input', type: 'checkbox' }));11console.log(shouldUseInputEvent({ tagName: 'input', type: 'text' }));12console.log(shouldUseInputEvent({ tagName: 'select' }));13console.log(shouldUseInputEvent({ tagName: 'textarea' }));14console.log(shouldUseInputEvent({ tagName: 'div' }));15console.log(shouldUseInputEvent({ tagName: 'input', type: 'file' }));

StackOverFlow community discussions

Questions

Discussion

Running Playwright in Azure Function

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?

firefox browser does not start in playwright

I played with your example for a while and I got the same errors. These are the things I found that made my example work:

It must be Linux. I know that you mentioned that you picked a Linux plan. But I found that in VS Code that part is hidden, and on the Web the default is Windows. This is important because only the Linux plan runs npm install on the server.

Make sure that you are building on the server. You can find this option in the VS Code Settings:

Make sure you set the environment variable PLAYWRIGHT_BROWSERS_PATH, before making the publish.

https://stackoverflow.com/questions/63949978/running-playwright-in-azure-function

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

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

Well this is one way, but not sure if it will work for all possible locators!.

// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
    const selector = locator.toString();
    const parts = selector.split("@");
    if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
    if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
    return parts[1];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-in-playwright

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.

Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});

https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

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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.