Nodejs等待异步映射函数执行完毕

function asyncMap(array, asyncFunction, callback) {
  let results = [];
  let count = 0;

  array.forEach((item, index) => {
    asyncFunction(item, (result) => {
      results[index] = result;
      count++;

      if (count === array.length) {
        callback(results);
      }
    });
  });
}

// 使用示例
asyncMap([1, 2, 3], asyncFunction, (results) => {
  console.log(results); // 输出异步操作的结果数组
});

function asyncMap(array, asyncFunction) {
  let promises = array.map((item) => {
    return asyncFunction(item);
  });

  return Promise.all(promises);
}

// 使用示例
asyncMap([1, 2, 3], asyncFunction)
  .then((results) => {
    console.log(results); // 输出异步操作的结果数组
  })
  .catch((error) => {
    console.error(error);
  });

async function asyncMap(array, asyncFunction) {
  let results = [];

  for (let item of array) {
    let result = await asyncFunction(item);
    results.push(result);
  }

  return results;
}

// 使用示例
asyncMap([1, 2, 3], asyncFunction)
  .then((results) => {
    console.log(results); // 输出异步操作的结果数组
  })
  .catch((error) => {
    console.error(error);
  });