How do I use families from javascript?

Families are referenced the same way as objects. For example:

runtime.objects.Sprite.getFirstInstance();

runtime.objects.FamilySprites.getFirstInstance();

I'd like to know how to get the family name of an object I have a reference to

It's usually the other way around - to get the object name of a family member use FamilyInstance.objectType.name

I don't think it's possible to find which family this object belongs to. But you can try to pick family instance by object UID. Here is how I would do this with events:

On Clicked Sprite
EnemiesFamily pick by UID = Sprite.UID

Thank you thank you dop2000!! You're always so helpful.

However what I want is to translate an "On <family name> created" condition:

I added an event listener for objects being created, and now have to check if they belong to that family.

Or is there another way to translate that that you'd suggest?

edit: also I just realized my approach doesn't even make sense because an object can be in many families. But still, how'd you go about that then?

Maybe I don't understand the issue, but can't you have the event listener for the family?

runtime.objects.Enemies.addEventListener("instancecreate", (event) => {

console.log("A new instance was created:", event.instance.objectType.name);

});