Test case details

Preparation Code

var arr = [];     for (var i = 0; i < 100000; i++) arr[i] = i;     var sum = 0;     var fn = function(v) {       sum += v;     }

Test cases

Test #1

arr.forEach(fn);

Test #2

for (var i = (arr.length - 1); i >= 0; i--) {   sum += arr[i]; }