100% solution for Tape Equilibrium Task on Codility

TapeEquilibrium.js

function solution(A) {
  var min = 99999999999;
  var total = 0;

  for (var i = 0; i < A.length; i++) {
    total += A[i];
  }

  var sum = 0;
  for (var j = 0; j < A.length - 1; j++) {
    sum += A[j];
    var res = Math.abs(sum - (total - sum));
    if (res < min) min = res;
  }

  return min;
}