Create routes using the Express JS Router
In this chapter, you will learn about the express js router. Basically, It is used to creating routes.
Getting started
So go to your desktop and create a new folder and name it as you wish. This is our app folder.
Then go inside the app folder(express route) and here initialize the npm by executing the npm init command.
After initializing the npm now install express.js. To install express run npm install express --save command on your terminal.
Make sure that your app folder is selected on your terminal.
Files creation
Inside the app folder, we will create two files one is index.js file and another routes.js.
routes.js
To create routes we will use express.Router. The express.Router class is used to create modular, mountable route handlers.
Note: A Router instance is a complete middleware and routing system.
const express = require('express');
const router = express.Router();
router.get('/', (req, res) => {
res.send('<h1>Home Page</h1>');
});
router.get('/about', (req, res) => {
res.send('<h1>About Page</h1>');
});
module.exports = router;index.js
Now in the index.js we will be importing routes and applying as a middleware.
const express = require('express');
const app = express();
// IMPORT ROUTES
const routes = require('./routes');
// Applying as Middleware
app.use(routes);
app.listen(3000, () => console.log('Your app listening on port 3000'));http://localhost:3000/
http://localhost:3000/about
Tip:1
app.use('/api',routes);http://localhost:3000/api/
http://localhost:3000/api/about
Tip:2
In all the above examples, you have to notice that –
http://localhost:3000/about/
&
http://localhost:3000/about
Both work the same. But, you can avoid that by enabling the router’s strict mode.
Enable router strict mode –
const router = express.Router({strict:true});Next is – Retrieve Post Data Using Express JS
Previous is – Express JS Route Handler
