Nested JSON: How to add (push) new items to an object?

Question

I\'m just starting with Arrays, Objects, and JSON - so hopefully there\'s just something simple I\'m overlooking here. I\'m encountering an error when attempting to

Answer 1

push is an Array method, for json object you may need to define it

this should do it:

library[title] = {"foregrounds" : foregrounds,"backgrounds" : backgrounds};