expressjsHow can I use an Express.js JSON parser?

An Express.js JSON parser can be used to parse JSON data from an HTTP request. This is done by using the express.json() middleware. The middleware will parse the body of the request and make the data available in req.body.

For example, if you have an HTTP request with a JSON body, you can use the following code to parse the data:

const express = require('express')
const app = express()

app.use(express.json())

app.post('/', (req, res) => {
  console.log(req.body)
})

This will output the parsed JSON object in the console.

The express.json() middleware has some additional options that can be passed as an object to the middleware function. These options include:

• limit: The maximum size of the request body in bytes
• type: An array of allowed content types
• verify: A function to verify the request body

For more information, refer to the Express.js documentation.

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