CODEWITHSUNDEEP
javascriptjqueryarraysreactjsjson
Priyanka
Priyanka

Reputation: 63

Finding highest count by sum up of an attribute in an Json array in javascript

I'm looking for clean and efficient way to get highest value count by sum up of all attributes in following json array.

[{ "id":1, "material":2, "noMaterial":3, "negative":1 }, { "id":2, "material":4, "noMaterial":3, "negative":3}, { "id":3, "material":0, "noMaterial":1, "negative":1}]

Expected Output:

{ "noMaterial": 7 }

Upvotes: 0

Views: 60

Answers (2)

Raeesh Alam
Raeesh Alam

Reputation: 3480

This is not perfect way but may be it can be help to you.

var data = [{ 
    "id": 1, 
    "material": 2, 
    "noMaterial": 3, 
    "negative": 1
}, { 
    "id": 2, 
    "material": 4, 
    "noMaterial": 3, 
    "negative": 3
}, {
    "id": 3, 
    "material": 0, 
    "noMaterial": 1, 
    "negative": 1
}];


let keyName = ['material', 'noMaterial', 'negative'];
let [material, noMaterial, negative] = [0, 0, 0];

data.map((v,i)=>{
    material += v.material;
    noMaterial += v.noMaterial;
    negative += v.negative;
});

const max = Math.max(material, noMaterial, negative);
const index = [material, noMaterial, negative].indexOf(max);

console.log(keyName[index]+':'+max)

Upvotes: 1

Ibrahim Banat
Ibrahim Banat

Reputation: 32

I defined a reusable hook that you can use on other attributes of your array as follows:

function getSum(keyName, data) {
  return {[keyName]: 
    data.reduce((acc, current) => {
      return acc + current[keyName]; 
    }, 0)
  };
}

and then call apply it on your data as follows:

getSum("noMaterial", data);

here is link for the code

Upvotes: 0

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