Как сделать HTTP-запрос с помощью Fetch API?

fetch("https://jsonplaceholder.typicode.com/todos/1")
  .then((response) => {
    if (!response.ok) throw new Error(`HTTP ${response.status}`);
    return response.json();
  })
  .then((data) => console.log(data))
  .catch((error) => console.error("Error:", error));

fetch("https://jsonplaceholder.typicode.com/posts", {
  method: "POST",
  headers: { "Content-Type": "application/json; charset=UTF-8" },
  body: JSON.stringify({ title: "foo", body: "bar", userId: 1 }),
})
  .then((response) => {
    if (!response.ok) throw new Error(`HTTP ${response.status}`);
    return response.json();
  })
  .then(console.log)
  .catch(console.error);