Serialize all form data into a query string

serialize.js

/**
 * Serialize all form data into a query string
 * {@link https://gist.github.com/kieranbarker/bb7c54bd12156c069419f64a22e61552}
 * @param {HTMLFormElement} form The form
 * @returns {String} The query string
 */
function serialize (form) {
  // Create a new FormData object
  const formData = new FormData(form);

  // Create a new URLSearchParams object
  const params = new URLSearchParams(formData);

  // Return the query string
  return params.toString();
}

View the demo:

https://codepen.io/kieranbarker/pen/QWKVQvQ