Express.js – res.get() Method

The res.get() method is used to return the HTTP headers specified by the field. The match is case-insensitive and therefore returns all the matching patterns.

Syntax

res.get( field )

Example 1

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

// res.get(field) 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){

   // Setting the Content-type
   res.set({
      'Content-Type': 'application/json',
   });

   // "text/plain"
   console.log(res.get('Content-Type'));
   res.end();
});

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

Hit the following Endpoint with a GET request − localhost:3000/api

Output

C:\home
ode>> node resGet.js
Server listening on PORT 3000
application/json; charset=utf-8

Example 2

Let's take a look at one more example.

// res.get(field) 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.use('/api', function(req, res, next){
   //Setting the response
   res.set({
      'Content-Type': 'application/xml',
   });
   next();
})

app.get('/api', function(req, res){
   console.log("Content-Type is: ", res.get('Content-Type'));
   res.send();
});

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

Hit the following Endpoint with a GET request −localhost:3000/api

Output

C:\home
ode>> node resGet.js
Server listening on PORT 3000
Content-Type is: application/xml