Sometimes, we want to get a URL parameter in Express and Node.js.

In this article, we’ll look at how to get a URL parameter in Express and Node.js.

How to get a URL parameter in Express and Node.js?

To get a URL parameter in Express and Node.js, we can use the req.params property.

For instance, we write

app.get('/p/:tagId', (req, res) => {
  res.send(req.params.tagId);
});

to get the tagId URL parameter with req.params.tagId in the GET route’s route handler.

Then if we make a GET reqest to /p/1, we see that req.params.tagId is 1.

Conclusion

To get a URL parameter in Express and Node.js, we can use the req.params property.