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; 
 }