Retrieve the POST query parameters using Express
Found out how to retrieve the POST query parameters using Express
THE AHA STACK MASTERCLASS
Now open with 50% off launch discount!
POST query parameters are sent by HTTP clients for example by forms, or when performing a POST request sending data.
How can you access this data?
If the data was sent as JSON, using Content-Type: application/json
, you will use the express.json()
middleware:
const express = require('express')
const app = express()
app.use(express.json())
If the data was sent using Content-Type: application/x-www-form-urlencoded
, you will need to use the express.urlencoded()
middleware:
const express = require('express')
const app = express()
app.use(express.urlencoded({
extended: true
}))
In both cases you can access the data by referencing it from Request.body
:
app.post('/form', (req, res) => {
const name = req.body.name
})
Note: older Express versions required the use of the
body-parser
module to process POST data. This is no longer the case as of Express 4.16 (released in September 2017) and later versions.
I wrote 20 books to help you become a better developer:
- Astro Handbook
- HTML Handbook
- Next.js Pages Router Handbook
- Alpine.js Handbook
- HTMX Handbook
- TypeScript Handbook
- React Handbook
- SQL Handbook
- Git Cheat Sheet
- Laravel Handbook
- Express Handbook
- Swift Handbook
- Go Handbook
- PHP Handbook
- Python Handbook
- Linux Commands Handbook
- C Handbook
- JavaScript Handbook
- CSS Handbook
- Node.js Handbook