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

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. Is there a method to get the query string parameters?

**UPDATE 4 May 2014**

Old answer preserved here:

---


1) Install express: ```npm install express```

**app.js**

var express = require('express');
var app = express();

app.get('/endpoint', function(request, response) {
var id = request.query.id;
response.end("I have received the ID: " + id);
});

app.listen(3000);
console.log("node express app started at

[To see links please register here]

");

2) Run the app: ```node app.js```


3) Visit in the browser: ```http://localhost:3000/endpoint?id=something```

> I have received the ID: something

---

*(many things have changed since my answer and I believe it is worth keeping things up to date)*

You should be able to do something like this:

var http = require('http');
var url = require('url');

http.createServer(function(req,res){
var url_parts = url.parse(req.url, true);
var query = url_parts.query;

console.log(query); //{Object}

res.end("End")
})

Since you've mentioned Express.js in your tags, here is an Express-specific answer: [use req.query](

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). E.g.

var express = require('express');
var app = express();

app.get('/', function(req, res){
res.send('id: ' + req.query.id);
});

app.listen(3000);

For Express.js you want to do `req.params`:

app.get('/user/:id', function(req, res) {
res.send('user' + req.params.id);
});

I learned from the other answers and decided to use this code throughout my site:

var query = require('url').parse(req.url,true).query;

Then you can just call

var id = query.id;
var option = query.option;

where the URL for get should be

/path/filename?id=123&option=456

A small Node.js HTTP server listening on port 9080, parsing GET or POST data and sending it back to the client as part of the response is:

var sys = require('sys'),
url = require('url'),
http = require('http'),
qs = require('querystring');

var server = http.createServer(

function (request, response) {

if (request.method == 'POST') {
var body = '';
request.on('data', function (data) {
body += data;
});
request.on('end',function() {

var POST = qs.parse(body);
//console.log(POST);
response.writeHead( 200 );
response.write( JSON.stringify( POST ) );
response.end();
});
}
else if(request.method == 'GET') {

var url_parts = url.parse(request.url,true);
//console.log(url_parts.query);
response.writeHead( 200 );
response.write( JSON.stringify( url_parts.query ) );
response.end();
}
}
);

server.listen(9080);

Save it as `parse.js`, and run it on the console by entering "node parse.js".

It is so simple:

**Example URL:**

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=$2a$08$jvGevXUOvYxKsiBt.PpMs.zgzD4C/wwTsvjzfUrqLrgS3zXJVfVRK

**You can print all the values of query string by using:**

console.log("All query strings: " + JSON.stringify(req.query));

**Output**

> All query strings : { "id":"3","activatekey":"$2a$08$jvGevXUOvYxKsiBt.PpMs.zgzD4C/wwTsvjz
fUrqLrgS3zXJVfVRK"}

**To print specific:**

console.log("activatekey: " + req.query.activatekey);

**Output**

> activatekey: $2a$08$jvGevXUOvYxKsiBt.PpMs.zgzD4C/wwTsvjzfUrqLrgS3zXJVfVRK

Whitequark responded nicely. But with the current versions of Node.js and Express.js it requires one more line. Make sure to add the 'require http' (second line). I've posted a fuller example here that shows how this call can work. Once running, type `http://localhost:8080/?name=abel&fruit=apple` in your browser, and you will get a cool response based on the code.

var express = require('express');
var http = require('http');
var app = express();

app.configure(function(){
app.set('port', 8080);
});

app.get('/', function(req, res){
res.writeHead(200, {'content-type': 'text/plain'});
res.write('name: ' + req.query.name + '\n');
res.write('fruit: ' + req.query.fruit + '\n');
res.write('query: ' + req.query + '\n');
queryStuff = JSON.stringify(req.query);
res.end('That\'s all folks' + '\n' + queryStuff);
});

http.createServer(app).listen(app.get('port'), function(){
console.log("Express server listening on port " + app.get('port'));
})

//get query&params in express

//etc. example.com/user/000000?sex=female

app.get('/user/:id', function(req, res) {

const query = req.query;// query = {sex:"female"}

const params = req.params; //params = {id:"000000"}

})