js同时多个文件

// 获取文件输入元素
const fileInput = document.getElementById('fileInput');

fileInput.addEventListener('change', (event) => {
  const files = event.target.files;

  for (let i = 0; i < files.length; i++) {
    const file = files[i];
    const reader = new FileReader();

    reader.onload = (e) => {
      const content = e.target.result;
      // 在这里处理文件内容
      console.log(`File ${file.name} content:`, content);
    };

    reader.readAsText(file);
  }
});

const MAX_CONCURRENT = 5;
let currentCount = 0;

function processFile(file) {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = (e) => resolve(e.target.result);
    reader.onerror = reject;
    reader.readAsText(file);
  });
}

async function handleFiles(files) {
  const promises = [];

  for (const file of files) {
    while (currentCount >= MAX_CONCURRENT) {
      await new Promise(resolve => setTimeout(resolve, 10));
    }

    currentCount++;
    promises.push(processFile(file).finally(() => currentCount--));
  }

  await Promise.all(promises);
  console.log('All files processed');
}