What are route parameters in web frameworks?

What are route parameters in web frameworks?

Route parameters are dynamic segments in a URL that allow you to capture values. For example, in a URL like /users/:id, :id is a route parameter.

Can you give me an example of how to use route parameters in Express.js?

Sure! In Express.js, you can define a route with a parameter like this: app.get('/users/:id', (req, res) => { const userId = req.params.id; // use userId here });.

What happens if I don't provide a value for a route parameter?

If you don't provide a value for a route parameter, the route won't match, and you'll typically get a 404 Not Found error.

Are route parameters the same in all frameworks?

While the concept is similar across frameworks, the syntax and implementation can vary. It's best to check the documentation for each framework.