Accessing Query Parameters in Express JS

In Express JS, accessing query parameters is straightforward. The req object, which represents the request being made to the server, contains a property called query. This query object holds the parsed key-value pairs from the URL’s query string.

Let’s look at a simple Express JS route handler that extracts query parameters:

Javascript

const express = require('express');
const app = express();
const PORT = 3000;
 
app.get('/search', (req, res) => {
    // Accessing query parameters
    const queryTerm = req.query.query;
    const category = req.query.category;
 
    // Your logic here using query parameters
    // ...
 
    res.send(`Search Query: ${queryTerm}, Category: ${category}`);
});
 
app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
});

In this example, the route handler for the /search endpoint extracts the query and category query parameters from the URL. You can then use these parameters as needed in your application logic.

How do you access query parameters in an Express JS route handler?

Express JS is a popular web framework for Node JS, simplifies the development of web applications. One common task is accessing query parameters from URLs within route handlers. In this article, we’ll explore the fundamentals of working with query parameters in Express JS and demonstrate how to access and utilize them in your route handlers.

Tags:

#Express.js #Node.js #Web Technologies

Understanding Query Parameters:

Handling Missing Parameters:

Accessing Query Parameters in Express JS

Javascript

How do you access query parameters in an Express JS route handler?

Similar Reads

Contact Us