expressjsHow do I use Express.js to handle a request query?

Express.js is a web application framework for Node.js that simplifies the process of handling requests and responses. It can be used to handle a request query by creating a route and defining a callback function. The callback function will be executed when the route is matched.

Example code

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

app.get('/', (req, res) => {
  // Handle query here
  res.send('Handling query')
})

app.listen(3000)

Output example

Server listening on port 3000

The code consists of the following parts:

1. Importing the Express module: const express = require('express')
2. Creating an Express application: const app = express()
3. Defining a route: app.get('/', (req, res) => {})
4. Handling the query in the callback function: // Handle query here
5. Sending a response: res.send('Handling query')
6. Starting the server: app.listen(3000)

For more information on Express.js, please refer to the official documentation.

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