How to get GET (query string) variables in Express.js on Node.js?

Question

Can we get the variables in the query string in Node.js just like we get them in $_GET in PHP?

I know that in Node.js we can get the URL in the request.

Answer 1

There are 2 ways to pass parameters via GET method

Method 1 : The MVC approach where you pass the parameters like /routename/:paramname
In this case you can use req.params.paramname to get the parameter value For Example refer below code where I am expecting Id as a param
link could be like : http://myhost.com/items/23

var express = require('express');
var app = express();
app.get("items/:id", function(req, res) {
    var id = req.params.id;
    //further operations to perform
});
app.listen(3000);

Method 2 : General Approach : Passing variables as query string using '?' operator
For Example refer below code where I am expecting Id as a query parameter
link could be like : http://myhost.com/items?id=23

var express = require('express');
var app = express();
app.get("/items", function(req, res) {
    var id = req.query.id;
    //further operations to perform
});
app.listen(3000);