node.js - NodeJS : How to wait for the HTTP Get request is complete in For Loop?

Question

我在 NodeJS 中有一个 for 循环函数。我想等到For Loop中Http Get请求的结果完成后再执行下一次迭代，如何实现？

for (let k=0; k<fd.length; k++) {
    url = fd[k].nct_id;

    HttpSearch({condition: url}).then(trials => {
         //Get the result first before execute the next iteration
         console.log(trials);
    });
}

Answer 1

您应该使 for 循环异步:

const main = async () => {
  for (let k = 0; k < fd.length; k++) {
    const url = fd[k].nct_id;

    const trials = await HttpSearch({ condition: url });

    console.log(trials);
  }
};

main().catch(console.error);

这将导致循环在每个 HttpSearch 处“暂停”。