How do I use Puppeteer for web scraping?

How do I use Puppeteer for web scraping?

Puppeteer is a Node.js library that provides a high-level API to control headless Chrome or Chromium. You can use it to scrape web pages by navigating to the page, selecting elements, and extracting data.

Can you show me a basic example of scraping a webpage?

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?

If the website loads content dynamically, you can wait for specific elements to appear using page.waitForSelector() before extracting data. This ensures that the content is fully loaded.

Are there any limitations I should be aware of?

Yes, some limitations include potential IP blocking if you scrape too aggressively, and legal considerations regarding the site's terms of service.