map函数中异步函数未按正确顺序执行

使用Promise.all结合async/await来确保异步函数按正确的顺序执行，代码示例如下：

const arr = [1, 2, 3];

const asyncFunc = async (num) => { return new Promise(resolve => { setTimeout(() => { resolve(num) }, num * 1000) }) };

const main = async () => { const promises = arr.map(async (num) => { return await asyncFunc(num) }); const res = await Promise.all(promises); console.log(res); // [1, 2, 3] };

main();