Jquery/javascript named index array with array association -

i want know if possible (and correct) construct named index array associated other arrays.

e.g.,

var signoptionset = [];  signoptionset['basic'] = ['sign width', 'sign height', 'sign depth', 'base material', 'finish'];  signoptionset['advanced'] = ['area', 'perimeter', 'lighting'];

how access 'sign height' in signoptionset['basic']?

i want know if possible...

yes, although way you're using it, wouldn't want array, you'd want object ({}) (see below).

...(and correct)...

some argue using array , adding non-index properties not correct. there's nothing technically wrong it, provided understand things (such json.stringify) won't see non-index properties.

how access 'sign height' in signoptionset['basic']?

it's second entry, index 1, of array you've assigned signoptionset['basic'], so:

var x = signoptionset['basic'][1]; 

or

var x = signoptionset.basic[1]; 

---

using object, , using property name literals there's no need strings here, this:

var signoptionset = {     basic: ['sign width', 'sign height', 'sign depth', 'base material', 'finish'],     advanced: ['area', 'perimeter', 'lighting'] }; 

you can use strings, though, if prefer:

var signoptionset = {     "basic": ['sign width', 'sign height', 'sign depth', 'base material', 'finish'],     "advanced": ['area', 'perimeter', 'lighting'] }; 

both single , double quotes valid in javascript (single quotes wouldn't in json, isn't json, it's javascript):

var signoptionset = {     'basic': ['sign width', 'sign height', 'sign depth', 'base material', 'finish'],     'advanced': ['area', 'perimeter', 'lighting'] };