Run results for: recursion vs iteration bench

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0

Browser: Firefox 151

Operating system: Linux

Device Platform: Desktop

Date tested: 2 months ago

for loop

121.1M/s

while loop

113.2M/s

recursion

1.8M/s

View exact numbers

Test name	Executions per second
✓ for loop	121,129,648 Ops/sec
while loop	113,221,984 Ops/sec
recursion	1,750,900 Ops/sec

Script Preparation code:

  var nums = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
  
  function sum_recurse(arr, i=0, acc=0) {
   if (i > arr.length)
     return acc;
  acc += i[i];  
  return sum_recurse(arr, i + 1, acc);
  }
  
  function sum_while(arr) {
   var total = 0,
       i = 0,
       len = arr.length;
  
   while (i < len) {
    total += arr[i++];
   }
  
   return total;
  }
  
  function sum_for(arr) {
   var total = 0,
       len = arr.length;
  
   for (var i = 0; i < len; i++) {
    total += arr[i];
   }
  
   return total;
  }

Tests:

recursion
sum_recurse(nums)
while loop
sum_while(nums)
for loop
sum_for(nums)