Understanding FormData in React

function handleSubmit(event) {
  event.preventDefault();
  const formData = new FormData(event.currentTarget);
  console.log(formData.get('name'), formData.getAll('topics'));
}

Jane Doe [ 'react', 'css' ]

Those three lines read a whole form without a single piece of React state. The form had a name field and two ticked checkboxes, and new FormData(form) collected their values in one step. This chapter is about forms in React, from reading their values to showing a result before the server answers, and `FormData