Node.js express nested routes

Question

I am new to Node.js and Express and tried to get through some of the lessons. I can get basic routing that works at one level deep (for example http://localhost/help), but it's hard for me to get it working at two levels (for example, http://localhost/help/test).

Here are the relevant lines in app.js:

var help = require('./routes/help');

// also tried this
//var help_test = require('./routes/help/test');

var app = express();
app.use('/help', help);
app.use('/help/test', help.test);

// also tried this
//app.use('/help/test', test);
//app.use('/help/test', help_test);

In the routes directory, I have two files: index.js and test.js.

The .js index consists of:

var express = require('express');
var router = express.Router();

router.get('/', function(req, res) {
  res.send('help');
});

module.exports = router;

The test.js file consists of:

var express = require('express');
var router = express.Router();


router.get('/test', function(req, res) {
  res.send('help test!');
});

module.exports = router;

Now I can not start the server because of the configuration in app.js, but any changes that I make to start it lead to 404 error when I try to click http://localhost/help/test

Answer 1

, require app.js. :

var help = require('./routes/help');

routes/help.js. . ./routes/index.js ./routes/help.js.

/help, /help/test, require:

var help_test = require('./routes/test');

app.js :

var help = require('./routes/index');
var help_test = require('./routes/test');

var app = express();
app.use('/help', help);
app.use('/help/test', help_test);

, , help_test /test, "use" /help/test, : /help/test/test.

Answer 2

, , , :

app.js :

var help = require('./routes/help');
var help_test = require('./routes/help/test');
....
app.use('/help', help);
app.use('/help/test', help_test);

/routes :

routes
|-- help
    |-- index.js
    |-- test.js