req.params in node js code example

Example 1: req.params.id in nodejs

req.params.id // It's been like requesting the value 'id' using parameter(params)

Example 2: req.params req.query

req.params contains route parameters (in the path portion of the URL), 
and req.query contains the URL query parameters (after the ? in the URL).

You can also use req.param(name) to look up a parameter in both places (as well as req.body),