expressjsHow do I use Express.js JSON middleware?

Express.js JSON middleware is a middleware that enables Express.js applications to parse incoming JSON data. It is designed to be used as an alternative to body-parser, which is the standard middleware used by Express.js applications for parsing incoming data.

To use Express.js JSON middleware, you need to first install it using npm:

npm install express-json

Then, you need to require it in your Express.js application:

const expressJson = require('express-json');

Once the middleware is required, you can add it to your Express.js application:

app.use(expressJson());

Now, the Express.js application is able to parse incoming JSON data. For example, if you have an endpoint that accepts a JSON object:

app.post('/api/create-user', (req, res) => {
  const { username, email } = req.body;
  // ...
});

You can test it by sending a POST request with a JSON body:

{
  "username": "john",
  "email": "[email protected]"
}

The Express.js application will be able to parse the incoming JSON data and make it available via the req.body object.

Helpful links

• Express.js JSON Middleware
• Express.js Documentation

Edit this code on GitHub