replaceDomain.js

/**
 * Replaces the domain of a URL with the domain of another URL.
 *
 * @param {string} url1 - The first URL containing the target domain to be replaced.
 * @param {string} url2 - The second URL containing the replacement domain.
 * @returns {string} - The modified URL with the domain replaced.
 */
function replaceDomain(url1, url2) {
  // Regular expression pattern to match the domain of a URL
  let urlRegex = /https:\/\/[^/]+/;

  // Extract the domain from url1
  let url1Domain = url1.match(urlRegex)[0];

  // Extract the domain from url2
  let url2Domain = url2.match(urlRegex)[0];

  // Replace the domain in url2 with the domain from url1
  return url2.replace(url2Domain, url1Domain);
}

function replaceDomain_test() {
  let url1 = 'https://example.com/page1';
  let url2 = 'https://test.com/page2';

  let modifiedUrl = replaceDomain(url1, url2);
  console.log(modifiedUrl); // https://example.com/page2

}