qa-wolf/index.js

// Solution by Ethan Ruszanowski
const { chromium } = require("playwright");

async function sortHackerNewsArticles() {
  // launch browser
  const browser = await chromium.launch({ headless: false });
  const context = await browser.newContext();
  const page = await context.newPage();

  // go to Hacker News
  await page.goto("https://news.ycombinator.com/newest");

  // instantiate array for all date objects
  let datestamps = []

  // loop through process per page
  for (var pageview = 0; pageview <= 3; pageview++) {
    // locate each article's age span
    let datespans = await page.locator('.age').all();

    // iterate through date spans to get timestamps
    for (row = 0; row < datespans.length; row++) {
      // turn timestamp strings into date objects and push to array
      datestamps.push(new Date(await datespans[row].getAttribute('title')));
    }

    // click the next button as needed
    await page.getByRole('link', { name: 'More', exact: true }).click();
  }

  // drop extra articles from last page grab
  datestamps = datestamps.slice(0, 100);

  // report results
  if (datestamps === datestamps.sort()) {
    console.log("Success! The first 100 articles are correctly sorted by posting time.")
  } else {
    console.log("Failure… The first 100 articles are not correctly sorted by posting time.")
  }
}

(async () => {
  await sortHackerNewsArticles();
})();