fix: 修复拖拽问题，松开鼠标结束拖动，互不影响

server.js

@@ -0,0 +1,28 @@
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+const server = http.createServer((req, res) => {
+    const filePath = req.url === '/' ? 'index.html' : req.url.slice(1);
+    const ext = path.extname(filePath);
+    const mimeTypes = {
+        '.html': 'text/html',
+        '.js': 'application/javascript',
+        '.css': 'text/css'
+    };
+    
+    fs.readFile(path.join(process.cwd(), filePath), (err, data) => {
+        if (err) {
+            res.writeHead(404);
+            res.end('Not Found');
+            return;
+        }
+        res.writeHead(200, { 'Content-Type': mimeTypes[ext] || 'text/plain' });
+        res.end(data);
+    });
+});
+
+server.listen(0, () => {
+    const port = server.address().port;
+    console.log('Server running on http://localhost:' + port);
+});