node js express url parameters

app.get('/path/:name', function(req, res) {
  res.send("tagId is set to " + req.params.name);
});// http://localhost:8080/api/1
app.get('/api/:version', function(req, res) {
    res.send(req.params.version);
});app.get('/',function(req,res)
{
    res.send("Route path at base address");
});