getIdFromUrl.js

/**
 * Extracts the ID from a Google Docs URL.
 *
 * @param {string} url - The Google Docs URL.
 * @returns {string|null} - The extracted ID from the URL, or null if no ID is found.
 */
function getIdFromUrl(url) {
  // Use a regular expression to match and extract the ID from the URL
  let result = url.match(/[-\w]{25,}(?!.*[-\w]{25,})/);
  
  if (result) {
    // If a match is found, return the first matched value, which represents the ID
    return result[0];
  } else {
    // If no match is found, return null to indicate the absence of an ID
    return null;
  }
}

function getIdFromUrl_test() {
  let url = 
  console.log(getIdFromUrl(url)) // 1sbw70fxipObXXXXXX_zKwSzXXXXXSu0p
  url = 'https://drive.google.com/'
  console.log(getIdFromUrl(url)) // null
  url = '1iexHLQhYstU1XXXXXXXXjIGhJ1JC5VT1'
  console.log(getIdFromUrl(url)) // 1iexHLQhYstU1XXXXXXXXjIGhJ1JC5VT1
}