Скачать или смотреть How to Pass JSON Data Using useNavigation Hooks in React JS

Discover how to effectively pass JSON data between components in React using the `useNavigation` hooks. This step-by-step guide will empower your app with dynamic data handling!
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How to Pass JSON Data Using useNavigation Hooks in React JS

In the world of web development, managing data between different components is a crucial skill that every React developer should master. This guide aims to tackle a common problem encountered while trying to display data from a JSON file in a React application through navigation.

The Challenge

Imagine you have a simple React app with a JSON data file containing titles and descriptions, and you wish to navigate from a home page to a service page where you can display detailed information about the selected item. However, upon navigating, you only see the ID instead of the full data. This can be frustrating! The issue lies in how we retrieve and set the data based on the id from the route parameters.

Here's a brief overview of the JSON structure we are working with:

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

Navigation Setup

In your app's main file, you utilize the useNavigate hook from React Router to navigate to another page while passing the id of the selected item:

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

When you navigate to the service page, you want to retrieve the full data of the selected item. However, it displays only the ID since the method used to obtain the data isn't correct.

The Solution

To resolve this issue, the key is to use the find method instead of map, and to ensure the types of your values are compatible. Here’s how you can do it:

Step 1: Update the Service Component

You need to update your Service component to find the correct data object instead of mapping it to boolean values. Here’s the correct implementation to achieve this:

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

Step 2: Changes Explained

Use find Instead of map: The find method retrieves the first item that satisfies the provided testing function. In this case, we make a comparison between the string representation of _data.id and the string id from useParams.

Initial State and Validation: Initialize state with an empty object (useState({})). It’s crucial to maintain a valid state invariant, especially since we are dealing with an object. Ensure that you only try to access data.title and data.description if data is defined.

Type Comparison: Ensure that you're comparing values of the same type. Convert the id parameter from the route to a string for compatibility with the number ID in your data array.

Final Thoughts

By following these adjustments, you should be able to successfully navigate to your service page and display the desired data based on the selected item. Effective data management is critical for any robust application, and understanding how to pass data smoothly across components will immensely enhance your React application.

Remember, maintaining a clean and organized code structure not only improves readability but also makes debugging easier in the long run.

We hope this blog helped you understand how to pass and display JSON data using useNavigation hooks in React JS. Happy coding!