How to use countMatchGroups method in Playwright Internal

Best JavaScript code snippet using playwright-internal

regex.js

Source: regex.js Github

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...74/​**75 * @param {RegExp | string} re76 * @returns {number}77 */​78function countMatchGroups(re) {79 return (new RegExp(re.toString() + '|')).exec('').length - 1;80}81/​**82 * Does lexeme start with a regular expression match at the beginning83 * @param {RegExp} re84 * @param {string} lexeme85 */​86function startsWith(re, lexeme) {87 const match = re && re.exec(lexeme);88 return match && match.index === 0;89}90/​/​ BACKREF_RE matches an open parenthesis or backreference. To avoid91/​/​ an incorrect parse, it additionally matches the following:92/​/​ - [...] elements, where the meaning of parentheses and escapes change...

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Using AI Code Generation

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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 console.log(count);6 await browser.close();7})();

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Using AI Code Generation

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1const { InternalAPI } = require('playwright');2const { Page } = require('playwright/​lib/​page');3const { Frame } = require('playwright/​lib/​frame');4const { ElementHandle } = require('playwright/​lib/​elementHandler');5const { JSHandle } = require('playwright/​lib/​jsHandle');6const { ElementHandleImpl } = require('playwright/​lib/​server/​dom');7const { JSHandleImpl } = require('playwright/​lib/​server/​jsHandle');8const page = new Page(new InternalAPI(), null, null, null, null, null, null, null, null);

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Using AI Code Generation

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1const { countMatchGroups } = require('playwright/​lib/​utils/​utils');2const regex = /​foo/​g;3const text = 'foofoofoo';4const count = countMatchGroups(regex, text);5const { countMatchGroups } = require('playwright/​lib/​utils/​utils');6const regex = /​foo/​g;7const text = 'foofoofoo';8const count = countMatchGroups(regex, text);9const { countMatchGroups } = require('playwright/​lib/​utils/​utils');10const regex = /​foo/​g;11const text = 'foofoofoo';12const count = countMatchGroups(regex, text);13const { countMatchGroups } = require('playwright/​lib/​utils/​utils');14const regex = /​foo/​g;15const text = 'foofoofoo';16const count = countMatchGroups(regex, text);17const { countMatchGroups } = require('playwright/​lib/​utils/​utils');18const regex = /​foo/​g;19const text = 'foofoofoo';20const count = countMatchGroups(regex, text);21const { countMatchGroups } = require('playwright/​lib/​utils/​utils');22const regex = /​foo/​g;23const text = 'foofoofoo';24const count = countMatchGroups(regex, text);25const { countMatchGroups } = require('playwright/​lib/​utils/​utils');26const regex = /​foo/​g;27const text = 'foofoofoo';28const count = countMatchGroups(regex, text);29const { countMatchGroups } = require('playwright/​lib/​utils/​utils');

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Using AI Code Generation

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1const {countMatchGroups} = require('playwright/​lib/​utils/​utils');2const regex = /​(\w+)\s(\w+)/​;3const text = 'John Doe';4const count = countMatchGroups(regex, text);5console.log(count);6ElementHandle.innerText()7ElementHandle.textContent()8ElementHandle.innerHTML()9ElementHandle.outerHTML()10ElementHandle.getAttribute()11ElementHandle.textContent()12ElementHandle.innerText()13ElementHandle.innerHTML()14ElementHandle.outerHTML()15ElementHandle.getAttribute()16ElementHandle.getAttribute()17ElementHandle.getAttribute()18ElementHandle.getAttribute()19ElementHandle.getAttribute()20ElementHandle.getAttribute()

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Using AI Code Generation

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1const { countMatchGroups } = require('playwright-core/​lib/​server/​utils');2const regex = new RegExp('(?<group1>foo)(?<group2>bar)(?<group3>baz)');3const text = 'foobarbaz';4const result = countMatchGroups(regex, text);5console.log(result);6const { countMatchGroups } = require('playwright-core/​lib/​server/​utils');7const regex = new RegExp('(?<group1>foo)(?<group2>bar)(?<group3>baz)');8const text = 'foobarbaz';9const result = countMatchGroups(regex, text);10console.log(result);11const { countMatchGroups } = require('playwright-core/​lib/​server/​utils');12const regex = new RegExp('(?<group1>foo)(?<group2>bar)(?<group3>baz)');13const text = 'foobarbaz';14const result = countMatchGroups(regex, text);15console.log(result);16const { countMatchGroups } = require('playwright-core/​lib/​server/​utils');17const regex = new RegExp('(?<group1>foo)(?<group2>bar)(?<group3>baz)');18const text = 'foobarbaz';19const result = countMatchGroups(regex, text);20console.log(result);21const { countMatchGroups } = require('playwright-core/​lib/​server/​utils');22const regex = new RegExp('(?<group1>foo)(?<group2>bar)(?<group3>baz)');23const text = 'foobarbaz';24const result = countMatchGroups(regex, text);25console.log(result);

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Using AI Code Generation

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1const { countMatchGroups } = require('playwright/​lib/​utils/​regexpp');2const regex = /​(\d{4})-(\d{2})-(\d{2})/​;3const count = countMatchGroups(regex);4const regexpp = require('regexpp');5const regex = /​(\d{4})-(\d{2})-(\d{2})/​;6const ast = regexpp.parse(regex);7const count = ast.alternatives[0].elements.length;8const regexpp = require('regexpp');9const regex = /​(\d{4})-(\d{2})-(\d{2})/​;10const ast = regexpp.parse(regex);11const count = ast.alternatives[0].elements.length;12const regexpp = require('regexpp');13const regex = /​(\d{4})-(\d{2})-(\d{2})/​;14const ast = regexpp.parse(regex);15const count = ast.alternatives[0].elements.length;16const regexpp = require('regexpp');17const regex = /​(\d{4})-(\d{2})-(\d{2})/​;18const ast = regexpp.parse(regex);19const count = ast.alternatives[0].elements.length;20const regexpp = require('regexpp');21const regex = /​(\d{4})-(\d{2})-(\d{2})/​;22const ast = regexpp.parse(regex);23const count = ast.alternatives[0].elements.length;

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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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