const editForm = createElement('form', null, { id: 'edit-form' }, [
         createElement('input', null, { type: 'hidden', name: 'id' }),
         createElement('h3', 'Edit book'),
         createElement('label', 'TITLE'),
         createElement('input', null, { type: 'text', name: 'title', placeholder: 'Title...', value: title }),
         createElement('label', 'AUTHOR'),
         createElement('input', null, { type: 'text', name: 'author', placeholder: 'Author...', value: author }),
         createElement('input', null, { type: 'submit', value: 'Save', onclick: onEdit, id }),
     ]);

     return editForm;
 }