How to access this attribute [duplicate]

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• Access / process (nested) objects, arrays or JSON 7 answers

I'm new to JavaScript and I've been stuck on this for a little while now. Let's say I have an object inside an array inside an object, like so:

         var myCrazyObject = { "name": "A ridiculous object", "some array": [7, 9, { purpose: "confusion", number: 123 }, 3.3], "random animal": "Banana Shark"}; 

Now I know that I can access the "some array" attribute thusly: myCrazyObject["some array"] So, the part that I'm stuck on is, how do I access the purpose or number attributes?