Basic puppeteer setup

index.js

const puppeteer = require('puppeteer');

main();

async function main () {
  const browser = await puppeteer.launch({ headless: false });
  const page = await browser.newPage();

  await page.goto(`https://webpage.com`, { waitUntil: 'load' });

  const mySelector = '.tk';
  await page.waitForSelector(mySelector);

  // Extract the results from the page.
  const texts = await page.evaluate(sel => {
    const els = Array.from(document.querySelectorAll(sel));
    return els.map(el => {
      const text = el.textContent.trim();
      return text;
    });
  }, mySelector);
  
  console.log(texts);

  await browser.close();
}