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 }

CodePudding user response：

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)

CodePudding user response：

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