How can I use Puppeteer for advanced web scraping?

How can I use Puppeteer for advanced web scraping?

Puppeteer is a Node.js library that provides a high-level API to control headless Chrome or Chromium. You can use it for advanced web scraping by automating browser actions like clicking, scrolling, and navigating.

Can you show me an example of scraping data from a website?

Sure! Here's a simple example:

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com');
  const data = await page.evaluate(() => {
    return document.querySelector('h1').innerText;
  });
  console.log(data);
  await browser.close();
})();

What if the website has dynamic content loaded with JavaScript?

Puppeteer can handle dynamic content since it waits for the page to load completely. You can use page.waitForSelector() to ensure the elements are available before scraping.

Are there any best practices for scraping with Puppeteer?

Yes! Some best practices include respecting the website's robots.txt, using delays between requests, and handling errors gracefully to avoid getting blocked.