What are Express parameters and queries?

Can you explain what Express parameters and queries are?

Sure! In Express, parameters are named URL segments that can capture values from the URL, while queries are key-value pairs in the URL's query string.

How do I access these parameters in my Express app?

You can access route parameters using req.params and query parameters using req.query in your route handler.

Can you give me an example of how to use them?

Absolutely! For example, if you have a route like /users/:id, you can access the id parameter with req.params.id. For query parameters like /search?term=express, you can access term with req.query.term.

What if I want to validate these parameters?

You can use middleware to validate parameters and queries before they reach your route handler, ensuring they meet your criteria.