How to Properly Read Data from JSON in React.js with TypeScript

---

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: React.Js and Typescript how to read data from JSON?

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---

The Problem

Imagine you are building a simple blog application that needs to fetch posts stored in a database using MongoDB and serve them through an API. You send a fetch request to your backend, and you receive a JSON response like this:

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

The Solution

Step 1: Define Your Types

To ensure TypeScript works for you, start by defining the expected structure of your JSON data:

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

Step 2: Adjust the State Hook

In your React component, use the defined interface for your state to properly manage the data:

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

Step 3: Fetching Data

Next, you will write the fetchPosts function to retrieve the data from your backend:

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

Step 4: Using useEffect to Trigger Data Fetching

Wrap your fetch call in a useEffect hook to execute it when the component mounts:

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

Step 5: Rendering the Data

When displaying the data, check for null values and directly access the properties:

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

Step 6: Error Handling and Loading State

Lastly, consider checking whether the data is still loading or if there's an error:

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

Conclusion