Skip to content
Related Articles

Related Articles

Express.js express.static() Function

View Discussion
Improve Article
Save Article
  • Difficulty Level : Hard
  • Last Updated : 16 Jun, 2022
View Discussion
Improve Article
Save Article

The express.static() function is a built-in middleware function in Express. It serves static files and is based on serve-static. Syntax:

express.static(root, [options])

Parameters: The root parameter describes the root directory from which to serve static assets. Return Value: It returns an Object. 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
  1. After installing the express module, you can check your express version in command prompt using the command.
npm version express
  1. 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 

javascript




var express = require('express');
var app = express();
var path = require('path');
var PORT = 3000;
 
// Static Middleware
app.use(express.static(path.join(__dirname, 'public')))
   
app.get('/', function (req, res, next) {
    res.render('home.ejs');
})
 
app.listen(PORT, function(err){
    if (err) console.log(err);
    console.log("Server listening on PORT", PORT);
});


Now, create home.ejs file in views folder with the following code: Filename: home.ejs 

html




<!DOCTYPE html>
<html>
<head>
    <title>express.static() Demo</title>
</head>
<body>
   <h2>Greetings from GeeksforGeeks</h2>
  <img src="Demo.jpg" width="150" height="100" />
</body>
</html>


Steps to run the program:

  1. The project structure will look like this: Note: Demo.jpg is placed in the public folder, as public folder is now being served as static to the server.
  2. Make sure you have installed express and ejs module using the following command:
npm install express
npm install ejs
  1. Run index.js file using below command:
node index.js
  1. Output:
Server listening on PORT 3000
  1. Now open your browser and go to http://localhost:3000/, you will see the following output on your screen:

Example 2: Filename: index.js 

javascript




var express = require('express');
var app = express();
var path = require('path');
 
// Static Middleware
console.log(app.use(express.static(
    path.join(__dirname, 'public'))))


Run index.js file using below command:

node index.js

Output:

[Function: app] EventEmitter {
  _events: [Object: null prototype] { mount: [Function: onmount] },
  _eventsCount: 1,
  _maxListeners: undefined,
  setMaxListeners: [Function: setMaxListeners],
  getMaxListeners: [Function: getMaxListeners],
  emit: [Function: emit],
  .
  .
  .
  .
  locals: [Object: null prototype] {
    settings: {
      'x-powered-by': true,
      etag: 'weak',
      'etag fn': [Function: generateETag],
      env: 'development',
      'query parser': 'extended',
      'query parser fn': [Function: parseExtendedQueryString],
      'subdomain offset': 2,
      'trust proxy': false,
      'trust proxy fn': [Function: trustNone],
      view: [Function: View],
      views: 'C:\\Users\\Lenovo\\Downloads\\GFG 
        Reviewer Internship\\Program\\views',
      'jsonp callback name': 'callback'
    }
  },
  mountpath: '/',
  _router: [Function: router] {
    params: {},
    _params: [],
    caseSensitive: false,
    mergeParams: undefined,
    strict: false,
    stack: [ [Layer], [Layer], [Layer] ]
  }
}

Reference: Official Documentation


My Personal Notes arrow_drop_up
Recommended Articles
Page :

Start Your Coding Journey Now!