Cum pentru a rezuma toate valorile în interiorul unei matrice javascript

Exemple de cod

2
0

mașina de scris suma tuturor matrice de valori

const sum = receiptItems.reduce((sum, current) => sum + current.total, 0);
0
0

cum de a găsi suma de matrice folosind JavaScript

// If you do not want to use array.reduece you can itereate through the array and then get the solution.
const  getSum = (arr)=>{
  let sum = 0;
  for(key of arr){
    sum += key
  }
  return sum
}

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