Express.js – app.post() Method

The app.post() method routes all the HTTP POST requests to the specified path with the specified callback functions.

Syntax

app.path(path, callback, [callback])

Parameters

• path − This is the path for which the middleware function is invoked. A path can be a string, path pattern, a regular expression or an array of all these.
• callback − These are the middleware functions or a series of middleware functions that acts like a middleware except that these callbacks can invoke next (route).

Example 1

Create a file with the name "appPost.js" and copy the following code snippet. After creating the file, use the command "node appPost.js" to run this code.

// app.post() Method Demo Example

// Importing the express module
const express = require('express');

// Initializing the express and port number
var app = express();
// Initializing the router from express
var router = express.Router();
var PORT = 3000;

// Creating a POST request
app.post('/api', (req, res) => {
   console.log("POST Request Called for /api endpoint")
   res.send("POST Request Called")
})

// App listening on the below port
app.listen(PORT, function(err){
   if (err) console.log(err);
   console.log("Server listening on PORT", PORT);
});

Hit the following Endpoint with a POST request

http://localhost:3000/api 

Output

C:\home
ode>> node appPost.js
Server listening on PORT 3000
POST Request Called for /api endpoint

Example 2

Let’s take a look at one more example.

// app.post() Method Demo Example

// Importing the express module
const express = require('express');

// Initializing the express and port number
var app = express();
// Initializing the router from express
var router = express.Router();
var PORT = 3000;

// Creating a POST request
app.post('/api', (req, res) => {
   console.log("Method called is -- ", req.method)
   res.end()
})

// App listening on the below port
app.listen(PORT, function(err){
   if (err) console.log(err);
   console.log("Server listening on PORT", PORT);
});

Now, hit the following Endpoint with a POST request

http://localhost:3000/api 

Output

C:\home
ode>> node appPost.js
Server listening on PORT 3000
Method called is -- POST