CODEWITHSUNDEEP
javascriptnode.jsobjectcompare
Ben
Ben

Reputation: 13

How to compare between object elments values in javascript

How to compare between object elments values in javascript

For example :

var obj = { tom: "5000", justin: "500", linda: "3000" };

How I can make a code to know which person have the higher salary as in the example: I should get as a result here (tom)?

Upvotes: 1

Views: 91

Answers (2)

Nina Scholz
Nina Scholz

Reputation: 386883

You could get first all keys of the object with Object.keys and then reduce by getting the higher salary key with Array#reduce.

var object = { tom: "5000", justin: "500", linda: "3000" },
    keys = Object.keys(object),
    max = keys.reduce(function (a, b) {
        return +object[a] > +object[b] ? a : b;
    });

console.log(max);

For getting more than only one top key, you need a different approach and return an array instead of a single value.

var object = { justin: "500", linda: "3000",  tom: "5000", jane: "5000" },
    keys = Object.keys(object),
    max = keys.reduce(function (r, a, i) {
        if (!i || +object[a] > +object[r[0]]) {
            return [a];
        }
        if (+object[a] === +object[r[0]]) {
            r.push(a);
        }
        return r;
    }, []);

console.log(max);

Upvotes: 3

Potato Running
Potato Running

Reputation: 408

function getMaxUser(object) {
    let maxUser = { max: 0 }
    for (let user in object) {
        if (maxUser.max < object[user]) {
            maxUser = {
                max: object[user],
                user: user
            }
        }
    }
    return maxUser
}
var obj = { tom: "5000", justin: "500", linda: "3000" }
console.log(getMaxUser(object).user)  //tom

Upvotes: 0

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