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Express.js router.all() Function

  • Last Updated : 09 Jul, 2020

The router.all() function is just like the router.METHOD() methods, except that it matches all HTTP methods (verbs). It is very helpful for mapping global logic for arbitrary matches or specific path prefixes.

Syntax:

router.all(path, [callback, ...] callback)

Parameter: The path parameter is the path of the specified URL and callback is the function passed as parameter.

Return Value: It returns responses.

Installation of express module:



  1. You can visit the link to Install express module. You can install this package by using this command.
    npm install express
  2. After installing the express module, you can check your express version in command prompt using the command.
    npm version express
  3. After that, you can just create a folder and add a file for example, index.js. To run this file you need to run the following command.
    node index.js

Example 1: Filename: index.js




var express = require('express');
var app = express();
var router = express.Router();
var PORT = 3000;
  
// Setting single route  
router.all('/user', function (req, res) {
    console.log("User Page Called");
    res.end();
});
  
app.use(router);
  
app.listen(PORT, function(err){
    if (err) console.log(err);
    console.log("Server listening on PORT", PORT);
});

Steps to run the program:

  1. The project structure will look like this:
  2. Make sure you have installed express module using the following command:
    npm install express
  3. Run index.js file using below command:
    node index.js

    Output:

    Server listening on PORT 3000
    
  4. Now make any request to http://localhost:3000/user like POST, PUT, DELETE or any other type of request, it will shown the following output
    User Page Called    
    

    Every type of request made to http://localhost:3000/user will print the same output.

Example 2: Filename: index.js




var express = require('express');
var app = express();
var router = express.Router();
var PORT = 3000;
  
// Setting multiple routes  
router.all('/user', function (req, res) {
    console.log("User Page Called");
    res.end();
});
  
router.all('/student', function (req, res) {
    console.log("Student Page Called");
    res.end();
});
  
router.all('/teacher', function (req, res) {
    console.log("Teacher Page Called");
    res.end();
});
  
app.use(router);
  
app.listen(PORT, function(err){
    if (err) console.log(err);
    console.log("Server listening on PORT", PORT);
});

Run index.js file using below command:

node index.js

Now make GET request to http://localhost:3000/user, http://localhost:3000/student and http://localhost:3000/teacher it will shown the following output.

User Page Called 
Student Page Called 
Teacher Page Called    

Reference: https://expressjs.com/en/4x/api.html#router.all




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