Express.js – req.acceptsCharsets() Method

The req.acceptsCharsets() method returns the first accepted charset of the specified charset sets. These charsets are based on the request's Accept-Charset HTTP header field. By default, it returns 'false' if none of the specified charsets is accepted.

Syntax

req.acceptsCharsets ( charset, [...] )

Example 1

Create a file with the name "reqAcceptsCharsets.js" and copy the following code snippet. After creating the file, use the command "node reqAcceptsCharsets.js" to run this code as shown in the example below −

// res.acceptsCharsets(lang, [...]) Method Demo Example
// Importing the express module
var express = require('express');

// Initializing the express and port number
var app = express();

// Initializing the router from express
var router = express.Router();
var PORT = 3000;

// Defining an endpoint
app.get('/api', function (req, res) {
   console.log(req.acceptsCharsets('UTF-8'));
   console.log("Charset Received: ", req.get('Accept-Charset'));
   res.end();
});
app.listen(PORT, function(err){
   if (err) console.log(err);
   console.log("Server listening on PORT", PORT);
});

Output

Hit the following Endpoint with a GET request "localhost:3000/api" and set the following property in header: Accept-Charsets = UTF-8.

C:\home
ode>> node reqAcceptsCharsets.js
Server listening on PORT 3000
Charset Received: UTF-8
UTF-8

Example 2

Let's take a look at one more example.

// res.acceptsCharsets(lang, [...]) Method Demo Example
// Importing the express module
var express = require('express');

// Initializing the express and port number
var app = express();

// Initializing the router from express
var router = express.Router();
var PORT = 3000;

// Defining an endpoint
app.get('/api', function (req, res) {
   console.log("Is valid charset: ", req.acceptsCharsets('ISO-8859-1'));
   console.log("Charset Received: ", req.get('Accept-Charset'));
   res.end();
});

app.listen(PORT, function(err){
   if (err) console.log(err);
   console.log("Server listening on PORT", PORT);
});

Output

Hit the Endpoint "localhost:3000/api" with a GET request and set the following property in headers - Accept-Language = UTF-8

C:\home
ode>> node reqAcceptsCharsets.js
Server listening on PORT 3000
Is valid charset: false
Charset Received: UTF-8