CODEWITHSUNDEEP
javascriptnode.jsexpress
Ron Harlev
Ron Harlev

Reputation: 16673

Node.js Express req.query is undefined

I'm running the following code on Node.js with Express 4.7.2

express.get('/test1',function(req, res) {
  var ttt = false;
  if (req.query.username === undefined) ttt = true;
  res.json({query: ttt});
});

I call the URL:

{{protocol}}://{{server}}/test1?username=1

And I get the result:

{query: true}

Which shows req.query.username is indeed undefined

What am I missing? How come the query param is not passed in?

Upvotes: 4

Views: 22530

Answers (2)

OrcaSoft
OrcaSoft

Reputation: 1

It seams that query typeof is string, and string of "undefined" is truthy.

In your code it should be:

if (req.query.username === "undefined")
  ttt = true;

Upvotes: 0

mscdex
mscdex

Reputation: 106698

The code you've shown works fine for me with node v0.10.30 and express 4.8.7:

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

app.get('/test1',function(req, res) {
  var ttt = false;
  if (req.query.username === undefined) ttt = true;
  res.json({query: ttt});
});

app.listen(8000);

I then navigate to http://localhost:8000/test1?username=1 and it displays {"query":false}.

Upvotes: 3

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