js单击按钮下载本地文件夹

npm install archiver express

const express = require('express');
const archiver = require('archiver');
const app = express();
const port = 3000;

app.get('/download', (req, res) => {
    const archive = archiver('zip', { zlib: { level: 9 }});
    res.attachment('example.zip');
    archive.pipe(res);

    // 添加文件到压缩包
    archive.file('path/to/file1.txt', { name: 'file1.txt' });
    archive.file('path/to/file2.txt', { name: 'file2.txt' });

    archive.finalize();
});

app.listen(port, () => {
    console.log(`Server running at http://localhost:${port}/`);
});

<button id="downloadBtn">下载文件夹</button>

document.getElementById('downloadBtn').addEventListener('click', function() {
    window.location.href = 'http://localhost:3000/download';
});