Access js object using variable

Question

I'm not sure if I'm correct with topic title, so sorry about that. I've got JS object '_buildings', which structure looks like this:

_buildings : {
        laboratory : {
            exist : false,
            value : 1000,
        },
        office : {
            exist : false,
            value : 500,
        },
}

Is it possible to access object somehow using this method:

var chain = 'laboratory'; //it could be 'office' or any other building name
var value = _buildings.chain.value;

Point is, I need to access object param while using variable in chain. Is it possible?

JSFiddle: http://jsfiddle.net/3k5anjjj/

do you know that objects in JavaScript are really just key-pairs and that you `can[subscript]` them with any expression? — The Paramagnetic Croissant, Jan 08 '15 at 10:20
possible duplicate of [Dynamically access object property using variable](http://stackoverflow.com/questions/4244896/dynamically-access-object-property-using-variable) — Jamiec, Jan 08 '15 at 10:22
Having answered this myself ive also voted to close as there is at least one duplicate on SO — Jamiec, Jan 08 '15 at 10:22

score 2 · Accepted Answer · answered Jan 08 '15 at 10:18

2

yes, use square bracket notation

var x = _buildings[chain].value;

Updated fiddle: http://jsfiddle.net/3k5anjjj/1/

answered Jan 08 '15 at 10:18

Jamiec

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Thank you, I will approve your answer after timeout. – Dazvolt Jan 08 '15 at 10:21

Access js object using variable

1 Answers1