parsing-path-params-part1.md

Parsing path params (Part 1)

You can capture parameters in your route path

Route parameters are named URL segments that are used to capture the values specified at their position in the URL. The captured values are populated in the req.params object, with the name of the route parameter specified in the path as their respective keys.

For example

Route path: /users/:userId/books/:bookId
Request URL: http://localhost:3000/users/34/books/8989
req.params: { "userId": "34", "bookId": "8989" }

To see this in action, take a look at route_parameter_example_1.js

node route_parameter_example_1.js

If you visit the URL http://localhost:3000/users/34/books/8989, you can see the parameters are captured in the req.params object.