URL Parameters with React Router

URL parameters are a fundamental aspect of React Router and a fundamental aspect of building web applications. In this post, we’ll break down the “URL Parameters” example on the React Router documentation to learn how you to effectively leverage URL parameters in your React app.

URL parameters are parameters whose values are set dynamically in a page’s URL. This allows a route to render the same component while passing that component the dynamic portion of the URL so it can change based off of it.

Then the Profile component would be able to access the dynamic handle from props.match.params.handle.

Let’s look at the example from the React Router docs now. First, we’ll need to import the components we’ll need and build a navbar. We’ll be navigating between the /netflix, /zillow-group, /yahoo, and /module-create paths.

Each of those paths are going to render the same Child component which will just show the URL parameter’s value (which we’ll call id).

Now we have our navbar and the component to render, the only thing left to do is to render a Route with a URL paramter.

And that’s it. Because we’re using URL parameters, we can have four different paths render the exact same component and that component will be passed the URL parameter (in this case id) as a prop.

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