Run results for: Closest vs Loop vs Recursion

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Browser: Chrome 105

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Closest	16872616.0 Ops/sec
Loop	19660514.0 Ops/sec
Recursion	6216968.0 Ops/sec

HTML Preparation code:

<div class="parent">
  <div class="child">
    <div class="child">
      <div class="child child-last"></div>
    </div>
  </div>
</div>

Script Preparation code:

window.isParent = function(el) {
  return el.classList.contains('parent');
}

window.findParent = function(el) {
  if (isParent(el)) return el
  if (!el.parentNode) return false
  return findParent(el.parentNode)
}
   
Benchmark.prototype.setup = function() {
  var element = document.getElementsByClassName('child-last')[0];
};

Tests:

Closest
element = element.closest('.parent')
Loop
while (element) { if (isParent(element)) break; if (!element.parentNode) break; element = element.parentNode; }
Recursion
element = findParent(element)