How to Pass Props to a Page Using Next.js and Next Router

Learn how to successfully `pass props` between pages in Next.js using the `Next Router` with query strings.
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This video is based on the question https://stackoverflow.com/q/71983695/ asked by the user 'kalculated' ( https://stackoverflow.com/u/14390956/ ) and on the answer https://stackoverflow.com/a/71983790/ provided by the user 'GeekyCode' ( https://stackoverflow.com/u/11644758/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

In the world of web development, especially when using frameworks like Next.js, it’s common to navigate between different pages based on user actions or data changes. One common question that arises is how to efficiently pass props to a different page when navigating. If you're working with React, TypeScript, and Next.js, you might find yourself in a situation where you need to push to a new screen while also passing data. Let's break down this process step-by-step.

The Problem

Imagine you have an application where you check certain conditions and decide to navigate to either a losing or winning screen based on that data. For instance, here's a piece of code that checks the data and navigates accordingly:

[[See Video to Reveal this Text or Code Snippet]]

This works perfectly for navigating to the screens, but what if you need to pass a prop (like a score or message) to the LoseScreen? That's where things can get tricky if you're not familiar with how to utilize query strings.

The Solution

To pass props to a Next.js page while navigating, you should leverage query strings. They allow you to include data in the URL itself, which can then be accessed on the destination page.

Step 1: Modifying the Navigation Code

Instead of simply pushing a path to the router, you can modify your navigation logic to include a query parameter. Here’s how you can do that:

[[See Video to Reveal this Text or Code Snippet]]

In this example, somekey is the name of the parameter you're passing, and someValue is the data you're sending.

Step 2: Accessing the Prop in the Loss Component

Once you navigate to the LoseScreen, you need to access the query parameters. Here's an example of how the Loss component should be structured:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the Component

useRouter: This hook from Next.js provides access to the router object within your component.

router.query: This holds the query parameters, allowing you to access the values you passed during navigation.

Conclusion

Navigating between pages in a Next.js application while passing props can significantly enhance the user experience by allowing context to be maintained. By using query strings, you can seamlessly pass values from one page to another, making your app dynamic and interactive.

Now you know how to effectively pass props while navigating with Next Router! If you have any further questions about Next.js or React development, feel free to ask or check the documentation for more insights.

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