CODEWITHSUNDEEP
javascriptobject
ChapmIndustries
ChapmIndustries

Reputation: 1531

Get element of JS object with an index

Ok so let's say that I have my object

myobj = {"A":["Abe"], "B":["Bob"]}

and I want to get the first element out of it. As in I want it to return Abe which has an index of A. How can I do something along the lines of myobj[0] and get out "Abe".

Upvotes: 69

Views: 180394

Answers (9)

Ahmad Ismail
Ahmad Ismail

Reputation: 13862

Try:

const obj = {
    name: 'John Doe',
    age: 34,
    country: 'Switzerland',
};

var _key = Object.keys(obj)[0]
var _value = Object.values(obj)[0]
var key = Object.entries(obj)[0][0]
var value = Object.entries(obj)[0][1]

console.log(_key)
console.log(_value)
console.log(key)
console.log(value)

Upvotes: 1

Mo Al Saleh
Mo Al Saleh

Reputation: 51

You could try

    Object.entries(myobj)[0]

Upvotes: 4

Fahem Idir
Fahem Idir

Reputation: 127

$.each(myobj, function(index, value) { 
    console.log(myobj[index]);
});

Upvotes: 0

Dennis Paixao
Dennis Paixao

Reputation: 149

myobj = {"A":["Abe"], "B":["Bob"]}

Object.keys(myobj)[0];  //return the key name at index 0
Object.values(myobj)[0]  //return the key values at index 0

Upvotes: 14

doset
doset

Reputation: 84

var myobj = {"A":["Abe"], "B":["Bob"]};

var keysArray = Object.keys(myobj);

var valuesArray = Object.keys(myobj).map(function(k) {

   return String(myobj[k]);

});

var mydata = valuesArray[keysArray.indexOf("A")]; // Abe

Upvotes: 3

CatWithGlasses
CatWithGlasses

Reputation: 1563

I know it's a late answer, but I think this is what OP asked for.

myobj[Object.keys(myobj)[0]];

Upvotes: 117

Alnitak
Alnitak

Reputation: 339836

JS objects have no defined order, they are (by definition) an unsorted set of key-value pairs.

If by "first" you mean "first in lexicographical order", you can however use:

var sortedKeys = Object.keys(myobj).sort();

and then use:

var first = myobj[sortedKeys[0]];

Upvotes: 26

jfriend00
jfriend00

Reputation: 707446

If you want a specific order, then you must use an array, not an object. Objects do not have a defined order.

For example, using an array, you could do this:

var myobj = [{"A":["B"]}, {"B": ["C"]}];
var firstItem = myobj[0];

Then, you can use myobj[0] to get the first object in the array.

Or, depending upon what you're trying to do:

var myobj = [{key: "A", val:["B"]}, {key: "B",  val:["C"]}];
var firstKey = myobj[0].key;   // "A"
var firstValue = myobj[0].val; // "["B"]

Upvotes: -2

Jeffpowrs
Jeffpowrs

Reputation: 4540

myobj.A

------- or ----------

myobj['A']

will get you 'B'

Upvotes: 1

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