Sometimes, we want to get the ID parameter from the URL with Express and Node.js.
In this article, we’ll look at how to get the ID parameter from the URL with Express and Node.js.
How to get the ID parameter from the URL with Express and Node.js?
To get the ID parameter from the URL with Express and Node.js, we can get it from the req.params object.
For instance, we write:
const express = require('express')
const app = express()
const port = 3000
app.get('/', (req, res) => {
res.send('Hello World!')
})
app.get('/user/:id/docs', (req, res) => {
const { id } = req.params;
res.send(id)
});
app.listen(port, () => {
console.log(`Example app listening on port ${port}`)
})
to add the /user/:id/docs route with:
app.get('/user/:id/docs', (req, res) => {
const { id } = req.params;
res.send(id)
});
':id' is the placeholder for the id URL parameter.
We get the ID value from req.params.
Therefore, if we go to /user/1/docs, we see 1 returned as the response.
Conclusion
To get the ID parameter from the URL with Express and Node.js, we can get it from the req.params object.
