Express req.query Property
The req.query property allows you to access the query parameters from the URL of an incoming HTTP request. Query parameters are key-value pairs included in the URL after the “?” symbol, and they are separated by “&” symbols.
Syntax:
req.query
Parameter: No parameters
Steps to Create the Application:
Step 1: Initialising the Node App using the below command:
npm init -y
Step 2: Installing the required packages:
npm i express body-parser
Project Structure:
The updated dependencies in package.json file will look like:
"dependencies": {
"express": "^4.18.2",
}
Example 1: Below is the basic example of the req.query property:
Javascript
const express = require('express');const app = express();const PORT = 3000;app.get('/profile', function (req, res) { console.log(req.query.name); res.send(); });app.listen(PORT, function (err) { if (err) console.log(err); console.log("Server listening on PORT", PORT); }); |
Steps to run the program:
node index.js
Console Output:
Server listening on PORT 3000
Bsrowser Output: go to http://localhost:3000/profile?name=Gourav :
Server listening on PORT 3000
Gourav
Example 2: Below is the basic example of the req.query property:
Javascript
const express = require('express');const app = express();const PORT = 3000;app.get('/user', function (req, res) { console.log("Name: ", req.query.name); console.log("Age:", req.query.age); res.send(); });app.listen(PORT, function (err) { if (err) console.log(err); console.log( "Server listening on PORT", PORT ); }); |
Steps to run the program:
node index.js
Output: make a GET request to http://localhost:3000/user?name=Gourav&age=11:
Server listening on PORT 3000
Name: Gourav
Age: 11
We have a complete reference article on request methods, where we have covered all the request methods, to check those please go through Express Request Complete Reference article:
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