Get array from JSON Array with lowest key's value

Question

In an array like below:

[{
    "sport" : "Cricket",
    "score" : "22.45"
},
{
    "sport" : "Tennis",
    "score" : "-12"
}]

I would like to iterate the JSON and find the array with lowest value of score. In this case get

{
    "sport" : "Tennis",
    "score" : "-12"
}

Possible duplicate of [Javascript get object from array having min value and min value is needs to find and then find object](https://stackoverflow.com/questions/43062868/javascript-get-object-from-array-having-min-value-and-min-value-is-needs-to-find) and [Finding object with lowest value for some key, in Javascript](https://stackoverflow.com/questions/26652327) — adiga, Mar 11 '19 at 09:50
[How much effort is expected of Stack Overflow users?](https://meta.stackoverflow.com/a/261593/3082296) — adiga, Mar 11 '19 at 09:54

score 1 · Accepted Answer · answered Mar 11 '19 at 09:44

1

Sort in ascending order based on the score and return the first object

var a = [{
    "sport": "Cricket",
    "score": "22.45"
  },
  {
    "sport": "Tennis",
    "score": "-12"
  }
];
console.log(a.sort((a, b) => a.score - b.score)[0])

answered Mar 11 '19 at 09:44

ellipsis

12,049
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@Developer mark this answer as the accepted answer if this worked for you in order to mark your question as solved – Derk Jan Speelman Mar 11 '19 at 09:54

Mohammad Ali Rony · Answer 2 · 2019-03-11T09:53:05.370

0

Try this to Get array from JSON Array with lowest key's value

let myArray =[{
    "sport" : "Cricket",
    "score" : "22.45"
},
{
    "sport" : "Tennis",
    "score" : "-12"
},
{ "sport" : "Tennis", "score" : "-12000" }]

let minOfArray =myArray.reduce(function(prev, curr) {
    return parseInt(prev.score) < parseInt(curr.score) ? prev : curr;
});

console.log(minOfArray);

edited Mar 11 '19 at 09:53

answered Mar 11 '19 at 09:46

Mohammad Ali Rony

4,695
3
19
33

1

This won't work for `{ "sport" : "Tennis", "score" : "-12000" }` – ttulka Mar 11 '19 at 09:51

score 0 · Answer 3 · answered Mar 11 '19 at 09:50

You should use parseInt:

var arr = [{
    "sport" : "Cricket",
    "score" : "22.45"
},
{
    "sport" : "Tennis",
    "score" : "-12"
},
{
    "sport" : "Tennis",
    "score" : "-12000"
}];

var res = arr.reduce((a,c) => parseInt(c.score) < parseInt(a.score) ? c : a);

score 0 · Answer 4 · answered Mar 11 '19 at 10:00

You can use reduce to iterate on your items and get the lowest score:

const data = [{
  "sport" : "Cricket",
  "score" : "22.45"
}, {
  "sport" : "Tennis",
  "score" : "-12"
}];

const result = data.reduce((acc, x) => x.score < acc.score ? x : acc, data[0]);

console.log(result);

Get array from JSON Array with lowest key's value

4 Answers4