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

How to use evalOnSelector method in Playwright Internal

Best JavaScript code snippet using playwright-internal

elementHandlerDispatcher.js

Source:elementHandlerDispatcher.js

...177    return {178      elements: elements.map(e => ElementHandleDispatcher.from(this._scope, e))179    };180  }181  async evalOnSelector(params, metadata) {182    return {183      value: (0, _jsHandleDispatcher.serializeResult)(await this._elementHandle.evalOnSelectorAndWaitForSignals(params.selector, !!params.strict, params.expression, params.isFunction, (0, _jsHandleDispatcher.parseArgument)(params.arg)))184    };185  }186  async evalOnSelectorAll(params, metadata) {187    return {188      value: (0, _jsHandleDispatcher.serializeResult)(await this._elementHandle.evalOnSelectorAllAndWaitForSignals(params.selector, params.expression, params.isFunction, (0, _jsHandleDispatcher.parseArgument)(params.arg)))189    };190  }191  async waitForElementState(params, metadata) {192    await this._elementHandle.waitForElementState(metadata, params.state, params);193  }194  async waitForSelector(params, metadata) {195    return {...

generateJavaSnippets.js

Source:generateJavaSnippets.js

...35  36    // Rename some methods37    line = line.replace(/\.goto\(/g, '.navigate(');38    line = line.replace(/\.continue\(/g, '.resume(');39    line = line.replace(/\.\$eval\(/g, '.evalOnSelector(');40    line = line.replace(/\.\$\$eval\(/g, '.evalOnSelectorAll(');41    line = line.replace(/\.\$\(/g, '.querySelector(');42    line = line.replace(/\.\$\$\(/g, '.querySelectorAll(');43    line = line.replace(/console.log/g, 'System.out.println');44    line = line.replace(/page.evaluate\((\(\) => [^\)]+)\)/g, 'page.evaluate("$1")');45    // Convert properties to methods46    line = line.replace(/\.keyboard\./g, '.keyboard().');47    line = line.replace(/\.mouse\./g, '.mouse().');48    line = line.replace(/\.coverage\./g, '.coverage().');49    line = line.replace(/\.accessibility\./g, '.accessibility().');50    line = line.replace(/\.chromium\./g, '.chromium().');51    line = line.replace(/\.webkit\./g, '.webkit().');52    line = line.replace(/\.firefox\./g, '.firefox().');53    line = line.replace(/\.length/g, '.size()');...

channels.js

Source:channels.js

1"use strict";2Object.defineProperty(exports, "__esModule", {3  value: true4});5exports.commandsWithTracingSnapshots = void 0;6/**7 * Copyright (c) Microsoft Corporation.8 *9 * Licensed under the Apache License, Version 2.0 (the "License");10 * you may not use this file except in compliance with the License.11 * You may obtain a copy of the License at12 *13 * http://www.apache.org/licenses/LICENSE-2.014 *15 * Unless required by applicable law or agreed to in writing, software16 * distributed under the License is distributed on an "AS IS" BASIS,17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.18 * See the License for the specific language governing permissions and19 * limitations under the License.20 */21// This file is generated by generate_channels.js, do not edit manually.22// ----------- Playwright -----------23// ----------- Selectors -----------24// ----------- BrowserType -----------25// ----------- Browser -----------26// ----------- EventTarget -----------27// ----------- BrowserContext -----------28// ----------- Page -----------29// ----------- Frame -----------30// ----------- Worker -----------31// ----------- JSHandle -----------32// ----------- ElementHandle -----------33// ----------- Request -----------34// ----------- Route -----------35// ----------- Response -----------36// ----------- WebSocket -----------37// ----------- ConsoleMessage -----------38// ----------- BindingCall -----------39// ----------- Dialog -----------40// ----------- Artifact -----------41// ----------- Stream -----------42// ----------- CDPSession -----------43// ----------- Electron -----------44// ----------- ElectronApplication -----------45// ----------- Android -----------46// ----------- AndroidSocket -----------47// ----------- AndroidDevice -----------48// ----------- SocksSocket -----------49const commandsWithTracingSnapshots = new Set(['EventTarget.waitForEventInfo', 'BrowserContext.waitForEventInfo', 'Page.waitForEventInfo', 'WebSocket.waitForEventInfo', 'ElectronApplication.waitForEventInfo', 'AndroidDevice.waitForEventInfo', 'Page.goBack', 'Page.goForward', 'Page.reload', 'Page.setViewportSize', 'Page.keyboardDown', 'Page.keyboardUp', 'Page.keyboardInsertText', 'Page.keyboardType', 'Page.keyboardPress', 'Page.mouseMove', 'Page.mouseDown', 'Page.mouseUp', 'Page.mouseClick', 'Page.touchscreenTap', 'Frame.evalOnSelector', 'Frame.evalOnSelectorAll', 'Frame.addScriptTag', 'Frame.addStyleTag', 'Frame.check', 'Frame.click', 'Frame.dblclick', 'Frame.dispatchEvent', 'Frame.evaluateExpression', 'Frame.evaluateExpressionHandle', 'Frame.fill', 'Frame.focus', 'Frame.getAttribute', 'Frame.goto', 'Frame.hover', 'Frame.innerHTML', 'Frame.innerText', 'Frame.inputValue', 'Frame.isChecked', 'Frame.isDisabled', 'Frame.isEnabled', 'Frame.isHidden', 'Frame.isEditable', 'Frame.press', 'Frame.selectOption', 'Frame.setContent', 'Frame.setInputFiles', 'Frame.tap', 'Frame.textContent', 'Frame.type', 'Frame.uncheck', 'Frame.waitForFunction', 'Frame.waitForSelector', 'JSHandle.evaluateExpression', 'ElementHandle.evaluateExpression', 'JSHandle.evaluateExpressionHandle', 'ElementHandle.evaluateExpressionHandle', 'ElementHandle.evalOnSelector', 'ElementHandle.evalOnSelectorAll', 'ElementHandle.check', 'ElementHandle.click', 'ElementHandle.dblclick', 'ElementHandle.dispatchEvent', 'ElementHandle.fill', 'ElementHandle.hover', 'ElementHandle.press', 'ElementHandle.scrollIntoViewIfNeeded', 'ElementHandle.selectOption', 'ElementHandle.selectText', 'ElementHandle.setInputFiles', 'ElementHandle.tap', 'ElementHandle.type', 'ElementHandle.uncheck', 'ElementHandle.waitForElementState', 'ElementHandle.waitForSelector']);...

helpers.js

Source:helpers.js

1const os = require("os")2const path = require("path")3const fs = require("fs")4const child_process = require("child_process")5const getCliVersion = () => {6  const runGoContent = fs.readFileSync(path.join(__dirname, "..", "run.go")).toString()7  const findings = /playwrightCliVersion = "(.*)"/.exec(runGoContent)8  return findings[1]9}10const getCacheDirectory = () => {11  switch (os.platform()) {12    case "linux":13      return path.join(os.homedir(), '.cache');14    case "darwin":15      return path.join(os.homedir(), 'Library', 'Caches');16    case 'win32':17      return path.join(os.homedir(), 'AppData', 'Local');18    default:19      throw new Error(`Not implemented for: ${os.platform()}`)20  }21}22const getCliLocation = () => {23  const cacheDirectory = getCacheDirectory()24  const cliVersion = getCliVersion()25  if (os.platform() !== "win32")26    return path.join(cacheDirectory, "ms-playwright-go", cliVersion, "playwright.sh")27  return path.join(cacheDirectory, "ms-playwright-go", cliVersion, "playwright.cmd")28}29const getAPIDocs = () => {30  return JSON.parse(child_process.execSync(`"${getCliLocation()}" print-api-json`, {31    maxBuffer: 1024 * 1024 * 10,32    shell: true33  }).toString())34}35const transformMethodNamesToGo = (funcName) => {36  const standardised = funcName37    .replace("$$eval", "evalOnSelectorAll")38    .replace("$eval", "evalOnSelector")39    .replace("$$", "querySelectorAll")40    .replace("$", "querySelector")41    .replace("pdf", "PDF")42    .replace("url", "URL")43    .replace("json", "JSON")44  return standardised[0].toUpperCase() + standardised.slice(1)45}46module.exports = {47  getAPIDocs,48  transformMethodNamesToGo,...

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  for (const browserType of ['chromium', 'firefox', 'webkit']) {4    const browser = await playwright[browserType].launch();5    const context = await browser.newContext();6    const page = await context.newPage();7    const result = await page.$eval('h1', (element) => element.textContent);8    console.log(result);9    await browser.close();10  }11})();12evalOnSelector() method13page.evalOnSelector(selector, pageFunction[, arg])14const playwright = require('playwright');15(async () => {16  for (const browserType of ['chromium', 'firefox', 'webkit']) {17    const browser = await playwright[browserType].launch();18    const context = await browser.newContext();19    const page = await context.newPage();20    const result = await page.evalOnSelector('h1', (element) => element.textContent);21    console.log(result);22    await browser.close();23  }24})();25evalOnSelectorAll() method26page.evalOnSelectorAll(selector, pageFunction[, arg])27const playwright = require('playwright');

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const elementHandle = await page.$('input[name=q]');6  const result = await page.evaluate(element => element.getAttribute('name'), elementHandle);7  console.log(result);8  await browser.close();9})();

Using AI Code Generation

1const { chromium } = require('playwright');2const { evalOnSelector } = 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  const result = await evalOnSelector(page, 'text=Get Started', 'element => element.textContent');8  console.log(result);9  await browser.close();10})();

Using AI Code Generation

1const {chromium} = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const element = await page.$('h1');6  const result = await page.evaluateHandle((element) => {7    return element.textContent;8  }, element);9  console.log(await result.jsonValue());10  await browser.close();11})();12const {chromium} = require('playwright');13(async () => {14  const browser = await chromium.launch();15  const page = await browser.newPage();16  const elements = await page.$$('h1');17  const result = await page.evaluateHandle((elements) => {18    return elements[0].textContent;19  }, elements);20  console.log(await result.jsonValue());21  await browser.close();22})();23const {chromium} = require('playwright');24(async () => {25  const browser = await chromium.launch();26  const page = await browser.newPage();27  const frame = page.mainFrame();28  const result = await page.evaluateHandle((frame) => {29    return frame.url();30  }, frame);31  console.log(await result.jsonValue());32  await browser.close();33})();34const {chromium} = require('playwright');35(async () => {36  const browser = await chromium.launch();37  const page = await browser.newPage();38  const frame = page.mainFrame();39  const result = await page.evaluateHandle((frame) => {40    return frame.url();41  }, frame);42  console.log(await result.jsonValue());43  await browser.close();44})();45const {chromium} = require('playwright');46(async () => {47  const browser = await chromium.launch();48  const page = await browser.newPage();49  const frame = page.mainFrame();

Using AI Code Generation

1const { evalOnSelector } = require('playwright/lib/server/supplements/recorder/recorderSupplement');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 result = await evalOnSelector(page, 'text="Get Started"', 'element => element.textContent');8  console.log(result);9  await browser.close();10})();

Using AI Code Generation

1(async () => {2    const browser = await chromium.launch();3    const page = await browser.newPage();4    const input = await page.$('input[name="q"]');5    const text = await input.evaluate(element => element.value);6    console.log(text);7    await browser.close();8})();9(async () => {10    const browser = await chromium.launch();11    const page = await browser.newPage();12    const input = await page.$$('input[name="q"]');13    const text = await input.evaluate(element => element.value);14    console.log(text);15    await browser.close();16})();17(async () => {18    const browser = await chromium.launch();19    const page = await browser.newPage();20    const input = await page.$('input[name="q"]');21    const text = await input.evaluate(element => element.value);22    console.log(text);23    await browser.close();24})();25(async () => {26    const browser = await chromium.launch();27    const page = await browser.newPage();28    const input = await page.$$('input[name="q"]');29    const text = await input.evaluate(element => element.value);30    console.log(text);31    await browser.close();32})();33(async () => {34    const browser = await chromium.launch();35    const page = await browser.newPage();36    const input = await page.$$('input[name="q"]');37    const text = await input.evaluate(element => element.value);38    console.log(text);39    await browser.close();40})();41(async () => {42    const browser = await chromium.launch();43    const page = await browser.newPage();44    const input = await page.$$('input[name="q"]');45    const text = await input.evaluate(element => element.value);46    console.log(text);47    await browser.close();48})();

Using AI Code Generation

1const { evalOnSelector } = require('playwright/lib/server/dom.js');2const elementHandle = await page.$('h1');3const textContent = await evalOnSelector(page, elementHandle, (element) => element.textContent);4const elementHandle = await page.$('h1');5const textContent = await evalOnSelector(page, elementHandle, (element) => element.textContent);6const elementHandle = await page.$('h1');7const textContent = await evalOnSelector(page, elementHandle, (element) => element.textContent);8const elementHandle = await page.$('h1');9const textContent = await evalOnSelector(page, elementHandle, (element) => element.textContent);10const elementHandle = await page.$('h1');11const textContent = await evalOnSelector(page, elementHandle, (element) => element.textContent);12const elementHandle = await page.$('h1');13const textContent = await evalOnSelector(page, elementHandle, (element) => element.textContent);14const elementHandle = await page.$('h1');15const textContent = await evalOnSelector(page, elementHandle, (element) => element.textContent);16const elementHandle = await page.$('h1');17const textContent = await evalOnSelector(page, elementHandle, (element) => element.textContent);18const elementHandle = await page.$('h1');19const textContent = await evalOnSelector(page, elementHandle, (element) => element.textContent);20const elementHandle = await page.$('h1');21const textContent = await evalOnSelector(page, element

Using AI Code Generation

1import { evalOnSelector } from 'playwright/lib/internal/evalOnSelector';2await evalOnSelector(page, 'selector', (element, arg1, arg2) => {3}, arg1, arg2);4import { evalOnSelectorAll } from 'playwright/lib/internal/evalOnSelectorAll';5await evalOnSelectorAll(page, 'selector', (elements, arg1, arg2) => {6}, arg1, arg2);7import { evalOnSelectorAll } from 'playwright/lib/internal/evalOnSelectorAll';8await evalOnSelectorAll(page, 'selector', (elements, arg1, arg2) => {9}, arg1, arg2);10import { evalOnSelectorAll } from 'playwright/lib/internal/evalOnSelectorAll';11await evalOnSelectorAll(page, 'selector', (elements, arg1, arg2) => {12}, arg1, arg2);13import { evalOnSelectorAll } from 'playwright/lib/internal/evalOnSelectorAll';14await evalOnSelectorAll(page, 'selector', (elements, arg1, arg2) => {15}, arg1, arg2);16import { evalOnSelectorAll } from 'playwright/lib/internal/evalOnSelectorAll';17await evalOnSelectorAll(page, 'selector',

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.