how to extract the particular data using path parameters in node js code example

Example 1: express get query params from url

GET /something?color1=red&color2=blue

app.get('/something', (req, res) => {
    req.query.color1 === 'red'  // true
    req.query.color2 === 'blue' // true
})

Example 2: express get raw query

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

const app = express();
app.use((req, res, next) => {
  const query = url.parse(req.url).query;
  // Do something...
});

const port = 3000;
app.listen(port, console.log(`Listening on port ${port}.`));