get object key value base on dynamic data

Question

console.log(x, obj.fares) //return undefined

output

adultFare
Object {adultFare: "9.00", childFare: null, seniorCitizenFare: null, disabledFare: null,}

How can I get adultDare value? do I have to loop the key? I expect obj.fares.x can get 9.00 since x's value is adultFare.

You just need `obj.adultFare` if `adultFare` is stored in a variable use `obj[someVariable]` — Satpal, Dec 10 '15 at 11:56
I'm sure I can help, but I don't think I'm understanding the question. obj.fares has the object. obj.fares.adultFare === "9.00" — Mic, Dec 10 '15 at 12:03

Jai · Accepted Answer · 2015-12-10T12:05:55.207

0

why not just:

console.log(obj.fares[x]);

var obj = {"fares":{adultFare: "9.00", childFare: null, seniorCitizenFare: null, disabledFare: null}},
    x = "adultFare";

document.querySelector('pre').innerHTML = obj.fares[x];

<pre></pre>

edited Dec 10 '15 at 12:05

answered Dec 10 '15 at 11:59

Jai

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@Jennifer you have to use bracket notation then. see the updates and demo. – Jai Dec 10 '15 at 12:06
now I know when to use bracket notation vs dot notation! is there other different use case? – Jennifer Dec 10 '15 at 12:12

Tomaltach · Answer 2 · 2015-12-10T12:42:02.807

-1

I believe it should be obj.adultFare

Try using lodash as it has some really good functions.

If you are trying the get the actually value in the adultfare has you could also try pluck

_.pluck(collection, path)

Pluck will give a return of all the adult fares in the array, so if you pass the single array in it will give you that one fare.

It has examples in the docs.

edited Dec 10 '15 at 12:42

answered Dec 10 '15 at 11:57

Tomaltach

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uh no.. any simpler solution? – Jennifer Dec 10 '15 at 12:01
Adding dependencies for simple operations seems like overkill. It's kind of like recommending everyone use Jquery if they're having trouble doing anything with DOM manipulation, when sometimes it's quite unnecessary. – Mic Dec 10 '15 at 12:01

get object key value base on dynamic data

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