循环内的Javascript Promise.all()

const promises = [
  fetch('https://api.example.com/data1'),
  fetch('https://api.example.com/data2'),
  fetch('https://api.example.com/data3')
];

Promise.all(promises)
  .then(responses => Promise.all(responses.map(response => response.json())))
  .then(data => {
    console.log(data); // 所有请求的数据
  })
  .catch(error => {
    console.error('Error:', error);
  });

const pLimit = require('p-limit');
const limit = pLimit(10); // 限制并发数量为10

async function fetchData(urls) {
  const promises = urls.map(url => limit(() => fetch(url)));
  const responses = await Promise.all(promises);
  const data = await Promise.all(responses.map(response => response.json()));
  return data;
}

const urls = [
  'https://api.example.com/data1',
  'https://api.example.com/data2',
  // ...更多URL
];

fetchData(urls)
  .then(data => {
    console.log(data);
  })
  .catch(error => {
    console.error('Error:', error);
  });