using params as endpoint express code example

Example 1: node js express url parameters

// http://localhost:8080/api/1
app.get('/api/:version', function(req, res) {
    res.send(req.params.version);
});

Example 2: express route parameters

app.get('/users/:userId/books/:bookId', function (req, res) {
  res.send(req.params)
})