por Do you know what React Router’s useParams hook consists of? React Router is a very powerful tool to finalize our React applications. Like every library in the world of programming, This gives us a set of files with a specific functionality. The function of this tool is to simplify the creation, redirection and nesting of routes to create dynamic navigation.
In this post, we will teach you what it is and how it works hook useParams of React Router, essential to know the parameters of our routes.
What is React Router’s useParams hook?
He hook useParams of React Router is one of the hooks main ones of this bookstore. As you can read in our post about the hooks In React Router, these elements are very important to access various properties of our components. If you don’t know the latter, we invite you to read our post on the main components of React Router.
In a particular way, he hook useParams React Router allows us to access the route parameters from a component. To do this, it returns a keys/values object with the dynamic parameters of the URL.
If you want to know in greater depth the theory of this component of hook useParamswe recommend you read the post about useParams at reactrouter.com.
How does React Router’s useParams hook work?
To use the hook useParams of React Router we recommend you save its value inside a variable. Since this value will not change, you can use the keyword const to declare your variable hook useParams:
const params = useParams( )
This also helps you inspect the object that this returns to us. hook. To do this, just enter the command console.log (params) and see the result in your browser’s inspector. There you can see that params It is an object with a key. This key comes out of the URL with a dynamic variable of the hook useParams.
An example of a dynamic variable within a URL is when we decide to declare route with ID in React Router. In these cases, we are defining an ID as part of the URL, a piece of information that changes depending on the object to be rendered. Then, this dynamic key is collected in the object params. You will notice that it is also collected with the same name that we have given to this variable in the route created for our URL.
This function of useParams React is very similar to what the framework «Express», which gives us the route parameter with the name we have given it. You can learn more about this tool in the post on the official Mozilla Developer Network page about Express.
You can use the parameter we get from this hook useParams React in various ways. The main one is to paint the dynamic data that we have in the URL on the screen. To do this, just call the variable where this is saved. hook in some component to render. Remember that to call variables you can use the JavaScript syntax, available when you decide to open a JavaScript window in React.
What’s next?
Now that you know what it is and how it works hook useParams from React Router, Now is the perfect time to use it to navigate your own projects! To learn more about creating all types of programming projects for the web, we invite you to be part of our Full Stack Web Development Bootcamp, an intensive and comprehensive training program where you will learn to develop projects with tools and languages such as React, JavaScript , HTML, CSS and JSX. What are you waiting for to fulfill your dream of being a web developer? We are waiting for you to help you change your life!