Did add a route '/roms', which sends a list of roms from server folde…

index.html

@@ -45,7 +45,7 @@
     </div>
     <div class="select">
       <select name="rom">
-        <option value="falling">falling</option>
+        <!-- <option value="falling">falling</option>
         <option value="dushlan">dushlan</option>
         <option value="color_test">color_test</option>
         <option value="firedemo">firedemo</option>
@@ -61,6 +61,7 @@
         <option value="giko017">giko017</option>
         <option value="hello">hello</option>
         <option value="nestest">nestest</option>
+        <option value="Mario">Mario</option> -->
       </select>
     </div>
   </div>
@@ -84,6 +85,17 @@
   <script type="module" src="./init.js"></script>
   <script type="module">
     import {start, startFile} from './main.js';
+    function romsListRender( roms ){
+      document.querySelector('select').innerHTML = roms.map( rom => `<option value=${rom}>${rom}</option>` ).join('');
+    }
+    (async ()=>{
+      const req = await fetch('/roms');
+      if( req.ok ){
+        let roms = await req.json();
+        roms = roms.map( rom => rom.split('.')[0] );
+        romsListRender(roms);
+      }
+    })();
     document.querySelector('select')
       .addEventListener('change', (e) => {
         start(`./roms/${e.target.value}.nes`);

package.json

@@ -4,6 +4,7 @@
   "description": "",
   "main": "index.js",
   "scripts": {
+    "dev": "nodemon server.js",
     "start": "npm run connect",
     "connect": "node server.js",
     "test": "echo \"Error: no test specified\" && exit 1",

server.js

@@ -1,9 +1,24 @@
 var connect = require('connect'),
     serveStatic = require('serve-static');
+    path = require('path');
+    fs = require('fs');
 
 var app = connect();
 
 app.use(serveStatic(__dirname));
+app.use('/roms', function(req, res, next){
+    if( req.method === 'GET' ){
+        fs.readdir(path.join(__dirname, 'roms'), 'utf-8' , function(err, files){
+            if( err ){
+                console.log(err);
+            } else{
+                let roms = files.filter( file => /.+?\.nes$/.test(file) );
+                res.end(JSON.stringify(roms));
+            }
+            next();
+        });
+    }
+});
 app.listen(3334);
 
-console.log('open localhost:3334');
+console.log('open http://localhost:3334/');