Reading JSON properties in NodeJS?

Question

I'm having trouble reading properties from JSON within NodeJS.

Feels like an obvious mistake I may be making..

The JSON is from this endpoint;

http://hypem.com/playlist/history/faisdotal/json/1/data.js

My code:

var request = require('request');

request("http://hypem.com/playlist/history/faisdotal/json/1/data.js", function (err, res, json) {
  JSON.parse(json);
  console.log(json["1"]["artist"]);  // undefined
});

~

Answer 1

You need to store the returned value of JSON.parse:

json = JSON.parse(json);
console.log(json["1"]["artist"]);

Answer 2

I think you want:

json = JSON.parse(json);

It won't (and can't) simply update the value of the parameter. The .parse() routine returns the value parsed from the string you pass it.

JavaScript is purely call-by-value, so there's really no way it could possibly work the way your code is written.