Find the Highest Altitude LeetCode solution in JavaScript

1
var largestAltitude = function (gain) {
2
  let points = [0];
3
  let highest = 0;
4

5
  for (let i = 0; i < gain.length; i++) {
6
    let point = points[i] + gain[i];
7
    points.push(point);
8
    if (point > highest) highest = point;
9
  }
10

11
  return highest;
12
};