Array within an array, within an object?

Question

HeroName = new Hero()
HeroName.Spells = [];
HeroName.Spells[0].Type = [];

This doesnt work =( , even if I try new Array() or anything else. Is it not possible to do arrays within arrays? This is what I was going for:

HeroName.Spells[0].Type[0] = new DmgSpell();
HeroName.Spells[0].Type[1] = new Buff();

I know I can do something like

HeroName.Spells[0][0] = new DmgSpelL();
HeroName.Spells[0][1] = new Buff();

But this doesn't make it as easy to read

Am I doing something wrong? I've tried every possible combination I could think of and using google to search 'array within an array' gives me other results that don't help me. Any help is greatly appreciated

Spells[0] needs to have an object assigned to it for that to work - at the moment it looks like you're trying to add a property Type to a nonexistant object. — Marty
– Marty, Commented Aug 29, 2013 at 1:41
Sorry for missing such an obvious thing and thank you so much for explaining it — Hate Names
– Hate Names, Commented Aug 29, 2013 at 1:45

Paul · Accepted Answer · 2013-08-29 01:42:11Z

7

You missed a step. You haven't declared HeroName.Spells[0] to be an object, so you can't a Type property to it, because it doesn't exist. This works:

HeroName = new Hero();
HeroName.Spells = [];
HeroName.Spells[0] = {};
HeroName.Spells[0].Type = [];

answered Aug 29, 2013 at 1:42

Paul

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1 Comment

Hate Names Over a year ago

Doh I feel stupid now...thanks so much for your help, so glad it works out! thank you once again

Jake Lin · Accepted Answer · 2013-08-29 01:53:02Z

3

Set HeroName.Spells[0] as an Object, otherwise, it is undefined. undefined can't have any properties.

HeroName.Spells[0] = {};

edited Aug 29, 2013 at 1:53

answered Aug 29, 2013 at 1:43

Jake Lin

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1 Comment

Hate Names Over a year ago

Thank you very much for taking the time to explain and write out an example

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