Error Uncaught TypeError: Cannot read properties of undefined (reading 'tweenjs_count')

Question

setTimeout(function () {
var photo2Sound = createjs.Sound.play("crocodile", { volume: 1 });
photo2Sound.on("complete", photoSoundCompleteHandler, this);
}, 2000); Hi. I'm working with canvass. I get an error with the above code. I'm not sure what I am doing wrong. When the sound completes, I am trying to call the photoSoundComplete() function. Uncaught TypeError: Cannot read properties of undefined (reading 'tweenjs_count') Any help would be appreciated.Thanks

JoãoCésar17023019 · Accepted Answer

Hi . yes, I got underfined

So create a reference to the current timeline and send it as an argument of the on method inside of the setTimeout method. Like this:

var _this = this;

setTimeout(function () {
var photo2Sound = createjs.Sound.play("crocodile", { volume: 1 });
photo2Sound.on("complete", photoSoundCompleteHandler, _this); // update here
}, 2000);

Regards,

JC

codeBeastAdobe · Answer

Hi - I'm sorry. The error is a tween error which is called in

photoSoundCompleteHandler

I use this tween for the target "king"

createjs.Tween.get(this.king, {override:true}).to({y:578}, 1000, createjs.Ease.bounceOut);

Then I play a sound. When it completes I call soundCompleteHandler to tween "king" back to another position.

It looks like there is a problem tweeting the same target. BUT I thought that override solved that,

function soundCompleteHandler ()
{
	createjs.Tween.get(this.king, {override:true}).to({y:1085}, 1000, createjs.Ease.bounceOut);
}

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