在将promise的值赋给对象数组之前，可以更清晰地等待promise得到解析

async function fetchData() {
  const promise1 = new Promise((resolve, reject) => {
    setTimeout(() => {
      resolve('数据1');
    }, 2000);
  });

  const promise2 = new Promise((resolve, reject) => {
    setTimeout(() => {
      resolve('数据2');
    }, 3000);
  });

  const promise3 = new Promise((resolve, reject) => {
    setTimeout(() => {
      resolve('数据3');
    }, 1000);
  });

  const dataArray = [];

  // 使用await等待promise解析，并将解析后的值赋给对象数组
  dataArray.push(await promise1);
  dataArray.push(await promise2);
  dataArray.push(await promise3);

  console.log(dataArray);
}

fetchData();