How to Create Multiple Routes in the Same Express.js Server ?

Creating multiple routes in an Express.js server involves defining routes in separate modules. This modular approach allows for better organization and maintainability by managing different routes independently and mounting them in the main server file.

Approach

To create multiple routes in an Express.js server, use express.Router() to define routes in separate modules. Import and mount these route modules in your main server file using app.use(). This modular approach enhances organization and maintainability.

Express Router

The express.Router() function is used to create a new router object. This function is used when you want to create a new router object in your program to handle requests. Multiple requests can be easily differentiated with the help of the Router() function in Express.js.This is the advantage of the use of the Router.

Syntax:

express.Router( [options] )

Optional Parameters:

• Case-sensitive: This enables case sensitivity.
• mergeParams: It preserves the req. params values from the parent router.
• strict: This enables strict routing.

Return Value: This function returns the New Router Object.

Structure Model :

Installing Module:

npm install express

Project structure:

Example: This example demonstrates creating multiple routes in sercer using express router

// Home.js 
// Importing express module 
const express=require("express") 
const router=express.Router() 

// Handling request using router 
router.get("/",(req,res,next)=>{ 
    res.send("This is the homepage request") 
}) 

// Importing the router 
module.exports=router

// login.js

// Importing the module 
const express=require("express") 

// Creating express Router 
const router=express.Router() 

// Handling login request 
router.get("/",(req,res,next)=>{ 
    res.send("This is the login request") 
}) 
module.exports=router

// index.js

const express=require("express") 

// Importing all the routes 
const homeroute=require("./routes/Home.js") 
const loginroute=require("./routes/login") 

// Creating express server 
const app=express() 

// Handling routes request 
app.use("/home",homeroute) 
app.use("/login",loginroute) 
app.listen((3000),()=>{ 
    console.log("Server is Running") 
}) 

Run index.js using the below command:

node index.js

Output: Handling the /home request by the client.