解析for循环中的promises

// 使用 async/await
async function processPromises() {
  for (let i = 0; i < 5; i++) {
    await new Promise((resolve) => setTimeout(resolve, 1000));
    console.log(i);
  }
}

processPromises();

// 使用 Promise.all
function processPromises() {
  const promises = [];
  for (let i = 0; i < 5; i++) {
    promises.push(new Promise((resolve) => setTimeout(resolve, 1000)));
  }
  Promise.all(promises).then(() => {
    console.log('All promises resolved');
  });
}

processPromises();

// 使用 async/await 确保顺序
async function processPromisesInOrder() {
  for (let i = 0; i < 5; i++) {
    await new Promise((resolve) => setTimeout(resolve, 1000));
    console.log(i);
  }
}

processPromisesInOrder();