Multiply values in object and assign to new array objects

Question

I have a array object and i have use map to multiply over each value

Myobject :

[{key: "Labour Cost", value: "118"}, {key: "Transport Cost", value: "118"}, {key: "Material Cost", value: "118"}]

function to calculate and merge as key value pair

const calculate = (elementID, i) => {
let mainRow = document.getElementById(elementID);
if (mainRow != null) {
  let qty = mainRow.querySelectorAll('[name=quantity]')[0].value;
  row[i].costRow.map((vl) => {
    const multiplyResult = qty * vl.value;
    object = Object.assign({}, {vl[key]: multiplyResult}); // **getting error here**
    
  });
  console.log(object);
}
}

Expected output :

[{key: "Labour Cost", value: "1146"}, {key: "Transport Cost", value: "123"}, {key: "Material Cost", value: "2334"}]

Could you please include the relevant HTML in the question?

Mamun
– Mamun

2021-03-30 09:14:51 +00:00
Commented Mar 30, 2021 at 9:14 — Mamun
– Mamun, Commented Mar 30, 2021 at 9:14

Mamun · Accepted Answer · 2021-03-30 09:00:51Z

1

Since key is not a variable (object property) you can try the following:

object = Object.assign({}, {[vl['key']]: multiplyResult});

Note: Since you are not returning anything from .map() you can use .forEach().

edited Mar 30, 2021 at 9:00

answered Mar 30, 2021 at 8:44

Mamun

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