How to reduce the array of objects into single array of required key?

Question

I am new to Javscript and , I have a response from the server like this,

[
    {
        "name": "jim",
        "color": "blue",
        "age": "22"
    },
    {
        "name": "Sam",
        "color": "blue",
        "age": "33"
    },
    ... 80 more.
]

There are 85 such objects in the responseArray, How do I use reduce method to get a resultArray with all the ages in the array. What I intend to make is an ageArray, as below:

const ageArray = [22,33,77 ... 88 more]

How to go about?

Why do you need the ageArray? It looks need you want to do some calculation later...If this is the case, you may need ```reduce()``` actually. — ikhvjs, Jun 08 '21 at 15:06
Using reduce(), you can try like this const ageArray = a.reduce((x, y) => { x.push(y.age); return x;}, []); console.log(ageArray ); — Ashok Kumar, Jun 09 '21 at 06:42

score 0 · Answer 1 · answered Jun 08 '21 at 15:02

0

Use .map:

let ageArray = arr.map(a => a.age);

answered Jun 08 '21 at 15:02

tymeJV

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How to reduce the array of objects into single array of required key?

1 Answers1