프로미스(Promise)의 세 가지 상태와 활용

const myPromise = new Promise((resolve, reject) => {
  // 비동기 처리 로직...
});
        

const myPromise = new Promise((resolve, reject) => {
  const data = "Success!";
  resolve(data);
});

myPromise.then((result) => {
  console.log(result); // "Success!"
});
        

const myPromise = new Promise((resolve, reject) => {
  const error = new Error("Something went wrong!");
  reject(error);
});

myPromise.catch((error) => {
  console.error(error.message); // "Something went wrong!"
});

function fetchData() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      const success = true;
      if (success) {
        resolve("Data fetched successfully!");
      } else {
        reject("Error fetching data");
      }
    }, 2000);
  });
}

fetchData()
  .then((result) => {
    console.log(result); // "Data fetched successfully!"
  })
  .catch((error) => {
    console.error(error); // "Error fetching data"
  });