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

How to use workerFunction method in Puppeteer

Best JavaScript code snippet using puppeteer

index.js

Source:index.js

...110      }111      if (job) {112        self.currentJobs++;113        if (self.workerFunction.length === 3) {114          self.workerFunction(jobId, job.payload, function(err, result, resultsMeta) {115            self.currentJobs--;116            self.markJobAsDone(jobId, err, result, resultsMeta);117            self.checkBacklogForJobs();118          });119        } else {120          self.workerFunction(job.payload, function(err, result, resultsMeta) {121            self.currentJobs--;122            self.markJobAsDone(jobId, err, result, resultsMeta);123            self.checkBacklogForJobs();124          });125        }126      }127      self.checkBacklogForJobs();128    });129  };130  this.checkBacklogForJobs = function() {131    this.locked = false;132    var jobId = self.backLog.pop();133    if (jobId) {134      self.attemptToProcess(jobId);...

createTaskProcessorWorker.js

Source:createTaskProcessorWorker.js

...8// handle errors correctly, hence try-catch9function callAndWrap(workerFunction, parameters, transferableObjects) {10  var resultOrPromise;11  try {12    resultOrPromise = workerFunction(parameters, transferableObjects);13    return resultOrPromise; // errors handled by Promise14  } catch (e) {15    return when.reject(e);16  }17}18/**19 * Creates an adapter function to allow a calculation function to operate as a Web Worker,20 * paired with TaskProcessor, to receive tasks and return results.21 *22 * @function createTaskProcessorWorker23 *24 * @param {createTaskProcessorWorker.WorkerFunction} workerFunction The calculation function,25 *        which takes parameters and returns a result.26 * @returns {createTaskProcessorWorker.TaskProcessorWorkerFunction} A function that adapts the...

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch();4  const page = await browser.newPage();5  await page.waitForSelector('a.storylink');6  const stories = await page.evaluate(() => {7    const anchors = Array.from(document.querySelectorAll('a.storylink'));8    return anchors.map(anchor => anchor.textContent);9  });10  console.log(stories);11  await browser.close();12})();13const puppeteer = require('puppeteer');14(async () => {15  const browser = await puppeteer.launch();16  const page = await browser.newPage();17  await page.waitForSelector('a.storylink');18  const stories = await page.evaluate(() => {19    const anchors = Array.from(document.querySelectorAll('a.storylink'));20    return anchors.map(anchor => anchor.textContent);21  });22  console.log(stories);23  await browser.close();24})();25const puppeteer = require('puppeteer');26(async () => {27  const browser = await puppeteer.launch();28  const page = await browser.newPage();29  await page.waitForSelector('a.storylink');30  const stories = await page.evaluate(() => {31    const anchors = Array.from(document.querySelectorAll('a.storylink'));32    return anchors.map(anchor => anchor.textContent);33  });34  console.log(stories);35  await browser.close();36})();37const puppeteer = require('puppeteer');38(async () => {39  const browser = await puppeteer.launch();40  const page = await browser.newPage();41  await page.waitForSelector('a.storylink');42  const stories = await page.evaluate(() => {43    const anchors = Array.from(document.querySelectorAll('a.storylink'));44    return anchors.map(anchor => anchor.textContent);45  });46  console.log(stories);47  await browser.close();48})();49const puppeteer = require('puppeteer');50(async () => {51  const browser = await puppeteer.launch();

Using AI Code Generation

1const puppeteer = require('puppeteer');2const fs = require('fs');3const path = require('path');4(async () => {5  const browser = await puppeteer.launch();6  const page = await browser.newPage();7  await page.screenshot({path: 'google.png'});8  await browser.close();9})();10const puppeteer = require('puppeteer');11module.exports = async function workerFunction() {12  const browser = await puppeteer.launch();13  const page = await browser.newPage();14  await page.screenshot({path: 'google.png'});15  await browser.close();16};17#### new PuppeteerWorker(options)18#### puppeteerWorker.run()19#### puppeteerWorker.terminate()20#### puppeteerWorker.on(event, callback)21#### puppeteerWorker.removeListener(event, callback)

Using AI Code Generation

1(async () => {2  const browser = await puppeteer.launch();3  const page = await browser.newPage();4  await page.screenshot({path: 'example.png'});5  await browser.close();6})();7(async () => {8  const browser = await puppeteer.launch();9  const page = await browser.newPage();10  await page.screenshot({path: 'example.png'});11  await browser.close();12})();13(async () => {14  const browser = await puppeteer.launch();15  const page = await browser.newPage();16  await page.screenshot({path: 'example.png'});17  await browser.close();18})();19(async () => {20  const browser = await puppeteer.launch();21  const page = await browser.newPage();22  await page.screenshot({path: 'example.png'});23  await browser.close();24})();25(async () => {26  const browser = await puppeteer.launch();27  const page = await browser.newPage();28  await page.screenshot({path: 'example.png'});29  await browser.close();30})();31(async () => {32  const browser = await puppeteer.launch();33  const page = await browser.newPage();34  await page.screenshot({path: 'example.png'});35  await browser.close();36})();37(async () => {38  const browser = await puppeteer.launch();39  const page = await browser.newPage();40  await page.screenshot({path: 'example.png'});41  await browser.close();42})();43(async () => {44  const browser = await puppeteer.launch();45  const page = await browser.newPage();46  await page.screenshot({path: 'example.png'});47  await browser.close();48})();

Using AI Code Generation

1const cluster = await Cluster.launch({2    puppeteerOptions: {3    },4});5await cluster.task(async ({page, data: url}) => {6    await page.goto(url);7    await page.screenshot({path: 'screenshot.png'});8});9await cluster.idle();10await cluster.close();11const { Cluster } = require('puppeteer-cluster');12module.exports = async function () {13    const cluster = await Cluster.launch({14        puppeteerOptions: {15        },16    });17    await cluster.task(async ({page, data: url}) => {18        await page.goto(url);19        await page.screenshot({path: 'screenshot.png'});20    });21    await cluster.idle();22    await cluster.close();23}24#### Cluster.launch(options)25#### cluster.task(task)26- `page` - The [Puppeteer Page](

Using AI Code Generation

1const puppeteer = require('puppeteer');2const workerFunction = require('./workerFunction.js');3(async () => {4  const browser = await puppeteer.launch();5  const page = await browser.newPage();6  await page.evaluate(workerFunction);7  await browser.close();8})();9module.exports = async () => {10  const div = document.createElement('div');11  div.innerText = 'Hello World';12  document.body.appendChild(div);13};14(async () => {15  const div = document.createElement('div');16  div.innerText = 'Hello World';17  document.body.appendChild(div);18})();19function workerFunction() {20  const div = document.createElement('div');21  div.innerText = 'Hello World';22  document.body.appendChild(div);23}24const workerFunction = () => {25  const div = document.createElement('div');26  div.innerText = 'Hello World';27  document.body.appendChild(div);28}29const workerFunction = function() {30  const div = document.createElement('div');31  div.innerText = 'Hello World';32  document.body.appendChild(div);33}34const workerFunction = function workerFunction() {35  const div = document.createElement('div');36  div.innerText = 'Hello World';37  document.body.appendChild(div);38}39const workerFunction = function workerFunction() {40  const div = document.createElement('div');41  div.innerText = 'Hello World';42  document.body.appendChild(div);43}44const workerFunction = function workerFunction() {45  const div = document.createElement('div');46  div.innerText = 'Hello World';47  document.body.appendChild(div);48}49const workerFunction = function workerFunction() {

Using AI Code Generation

1const puppeteer = require('puppeteer');2const workerFunction = require('./workerFunction.js');3(async () => {4  const browser = await puppeteer.launch({ headless: true });5  const page = await browser.newPage();6  await page.screenshot({ path: 'google.png' });7  await workerFunction(page);8  await browser.close();9})();

Using AI Code Generation

1const puppeteer = require('puppeteer');2const fs = require('fs');3const path = require('path');4const { promisify } = require('util');5const readFileAsync = promisify(fs.readFile);6(async () => {7    const browser = await puppeteer.launch();8    const page = await browser.newPage();9    const workerFunction = async () => {10        const { readFileAsync } = require('fs');11        const { promisify } = require('util');12        const readFileAsync = promisify(readFileAsync);13        const text = await readFileAsync('/tmp/foo.txt', 'utf8');14        return text;15    };16    const result = await page.evaluate(workerFunction);17    console.log(result);18    await browser.close();19})();20const result = await page.evaluate(workerFunction, 'foo.txt');21const puppeteer = require('puppeteer');22(async () => {23    const browser = await puppeteer.launch();24    await browser.newPage();25    await browser.evaluateOnNewDocument(() => {26        Object.defineProperty(navigator, 'webdriver', {27            get: () => false,28        });29    });30    const pages = await browser.pages();31    const page = pages[0];32    await page.waitFor(5000);33    await browser.close();34})();35const puppeteer = require('puppeteer');36(async () => {37    const browser = await puppeteer.launch();38    const page = await browser.newPage();39    await page.exposeFunction('add', (a, b) => a + b);40    await page.evaluate(() => {41        console.log(`add(

Using AI Code Generation

1const { workerFunction } = require('workerpool');2const scrape = async (url) => {3  const browser = await puppeteer.launch({ headless: true });4  const page = await browser.newPage();5  await page.goto(url);6  const data = await page.evaluate(() => {7    const tds = Array.from(document.querySelectorAll('td'));8    return tds.map((td) => td.innerText);9  });10  await browser.close();11  return data;12};13module.exports = workerFunction(scrape);14const { Pool } = require('workerpool');15const pool = new Pool();16];17const main = async () => {18  const results = await Promise.all(19    urls.map(async (url) => {20      return await pool.exec('test.js', [url]);21    })22  );23  console.log(results);24};25main();26const browser = await puppeteer.launch({27      executablePath: 'C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe',28    });29const { workerFunction } = require('workerpool');30const scrape = async (url, executablePath) => {31  const browser = await puppeteer.launch({ headless: true, executablePath });32  const page = await browser.newPage();33  await page.goto(url);

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.