CODEWITHSUNDEEP
javascriptnode.js
Tarik Amri
Tarik Amri

Reputation: 31

url.parse() returns undefined object keys

when i use url.parse(from the url module in node.js)it returns undefined object keys

i kept searching on internet and apparently most people use express.js so i didnt find any case similar to mine

here is the code(shortened):

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

http.createServer(function(req, res) {
if (req.url != '/favicon.ico') {
    var q = Url.parse(req.url, true);
    console.log(req.url);
    for (var key in q) {
        console.log(key + ':' + q.key);
    }
    console.log('closing');
    res.end();
}
}).listen(8080);

and the console displays this :

/?season=summer
protocol:undefined
slashes:undefined
auth:undefined
host:undefined
port:undefined
hostname:undefined
hash:undefined
search:undefined
query:undefined
pathname:undefined
path:undefined
href:undefined
parse:undefined
format:undefined
resolve:undefined
resolveObject:undefined
parseHost:undefined
closing

Upvotes: 2

Views: 1505

Answers (2)

10100111001
10100111001

Reputation: 1832

You need to use the query property of the parsed Url like you initially had it. You just need to access the value of the query object correctly.

Check the simplified example below (Note: queryData[key]):

const url = require('url');

const queryData = url.parse('http://127.0.0.1:8000/status?season=summer', true).query;

for (const key in queryData) {
  console.log(`${key}: ${queryData[key]}`);
}

Edit:

The explanation for why you can't do something like queryData.key is that that would try to access a property in queryData object named 'key' and not the current key variable value (in this case 'season').

In this instance, the queryData object looks like this:

var queryData = {
  'season': 'summer'
};

If you try to access queryData.key it is looking for the literal key called 'key' and not the value of the variable called key which happens to be season in the first iteration of the for in loop. Using queryData[key] allows you to access the value of the key assigned to the key variable.

Upvotes: 1

PLASMA chicken
PLASMA chicken

Reputation: 2785

Instead of: var q = Url.parse(req.url, true).query; you need to use var q = Url.parse(req.url, true);.

Otherwise q will already be Url.parse().query and the reset will not work/be undefined.

Upvotes: 0

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