CODEWITHSUNDEEP
javascriptsoundcloudsoundmanager2
coiso
coiso

Reputation: 7479

undefined of something that is clearly defined

this must be some JavaScript concept that I am not grasping yet..

For some odd reason the id of thisSound returns undefined! why??

console.log("o: "+o.id+" - "+decodeURI(soundURL));
// create sound
thisSound = soundManager.createSound({
    id:o.id,
    url:decodeURI(soundURL)
});

console.log("thisSound: "+thisSound.id+" - "+thisSound.url);

the console :

o: Sound0 - http://api.soundcloud.com/tracks/76673175/stream?client_id=e992d357c0914e9b65ba17f459720fc0

thisSound: undefined - http://api.soundcloud.com/tracks/76673175/stream?client_id=e992d357c0914e9c65ba17f459720fc0

Upvotes: 0

Views: 178

Answers (2)

Misha Reyzlin
Misha Reyzlin

Reputation: 13916

The code you provided doesn't “obviously” define the id of the returned object.

// create sound
thisSound = soundManager.createSound({
    id:o.id,
    url:decodeURI(soundURL)
});

Let's say I write the function createSound for you: 

var soundManager = {
  createSound: function (options) {
    // do internal magic here
    createSound(options);
    // return public API here
    return {
      getId: function () {}
    }
  }
};

So, my point here is that if there is a third-party function, you should follow the docs of whoever created that function, and SoundManager apparently doesn't return an object with id property defined on it. It “returns a SMSound object instance” – and what is that object, please find out in the docs.

Upvotes: 1

fcortes
fcortes

Reputation: 1368

I know nothing about the soundcloud library, although the function createSoundseems asyncronous... (It's like I/O Stuff, the most of the I/O operations in javascript -and the other languages- are async ).. Is it possible when you have called the console.log thisSound hasn't been fully created yet? Maybe you could emulate a setInterval() behaviour with a lot of time and this code works... (although I believe you should use a callback function for this).

Upvotes: 0

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