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 array elements
  datestamps.splice(100, 20);

  // check if the website dates are sorted and 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();
})();