serializeForm.js

    const serialize = (form) => {

      if (typeof form != 'object' && form.nodeName != "FORM") return;

      const idDisqualified = el => (el.name && !el.disabled && el.type != 'file' && el.type != 'reset' && el.type != 'submit' && el.type != 'button');
      const isChecked = el => (el.type != 'checkbox' && el.type != 'radio') || el.checked;

      return Array
        .from(form.elements)
        .filter(el => idDisqualified(el))
        .filter(el => isChecked(el))
        .reduce((result, el) => {
          result[el.name] = el.value;
          return result;
        }, {})
    }