const { JSDOM } = require('jsdom');

// Function to query elements from a webpage
async function queryElements(url, selector) {
  try {
    // Fetch webpage content
    const response = await fetch(url);
    const html = await response.text();

    // Create a DOM using jsdom
    const dom = new JSDOM(html);
    const doc = dom.window.document;

    // Query elements using the provided selector
    const elements = doc.querySelectorAll(selector);

    // Return array of matching elements
    return Array.from(elements);
  } catch (error) {
    console.error('Error:', error);
    return [];
  }
}

// Example usage:
const url = 'http://example.com';
const selector = 'a';
queryElements(url, selector)
  .then(elements => {
    console.log(elements);
  })
  .catch(error => {
    console.error('Error:', error);
  });