Get Query String variable in Expressjs

In this blog, we’ll learn how to handle route parameters in an Express.js application.

Handling Route Parameters in Express js

when making a server side application with the help of node js,Express.js is one of most popular framework to work with.Ot having one useful feature that in express handling route parameter allow your application to capture and process dynamic data from the URL.

Setting Express Application

Firstly you have to install express from node package manager.

npm install express

Now, let’s create a basic Express server.

const express = require('express');
const app = express();

app.use(express.json());

app.listen(8000, () => {
    console.log("Listening on port 8000");
});

With this above mentioned code our server now will start working and it is listening on port 8000.Now next will make route parameter.

Handling Route Parameter

Now will create the Route that will capture the id parameter from the URL

app.get('/home/:id', (req, res) => {
    let { id } = req.params;
    res.send(id);
});

whole code is given below

const express=require('express');
const app=express()

app.use(express.json())

app.listen(8000,()=>{
    console.log("Listening on port 8000");
})

app.get('/home/:id',(req,res)=>{
    let id=req.params;
    res.send(id)
})

Output :