Express.js | app.path() Function

The app.path() function returns the canonical path of the app as a string. The behavior of this method can become very complicated in complex cases of mounted apps. It is usually better to use req.baseUrl to get the canonical path of the app.

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 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

Filename: index.js





var express = require('express');
var app = express();
var PORT = 3000;
var app = express()
var blog = express()
var blogAdmin = express()
app.use('/user', blog)
blog.use('/admin', blogAdmin)
console.dir(app.path()) // ''
console.dir(blog.path()) // '/blog'
console.dir(blogAdmin.path()) // '/blog/admin'


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



So this is how you can use the express app.path() function that returns the canonical path of the app as a string.

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