Get the sum of all specified elements in an array of objects

Question

I have an array of objects as folllows

[
    {\"width\":128.90663423245883,\"height\":160,\"X\":0,\"Y\":140},
    {\"width\":277.0938568683375,\"height\":263,\"X         


        

Answer 1

function count(stack) {
    var totWidth = 0;
    stack.forEach(function(element) {
      totWidth = totWidth+element.width;
    });
  return totWidth;
}

working example