how to get varibables from url express code example

Example 1: express get url parameters

app.get('/path/:name', function(req, res) {
  res.send("tagId is set to " + req.params.name);
});

Example 2: get value from path variable node js

exports.doIt = function(req, res, next) {
    var group = new Group(req.body);

    console.log(req.params);

    group.userId = req.params.userId;

    group.save(new dataCallbacks(req, res, next, "Group").insert());
});