Run results for: ChildNodes vs NextSibling

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

Test name	Executions per second
✓ NextSibling	4,335,346 Ops/sec
ChildNodes	1,458,748 Ops/sec

Script Preparation code:

var t = document.createElement('template');
t.innerHTML = '<tr><td class="col-md-1"></td><td class="col-md-4"><a></a></td><td class="col-md-1"><a><span class="glyphicon glyphicon-remove" aria-hidden="true" /></a></td><td class="col-md-6" /></tr>';
var template = t.content.firstChild;

function childNodes(tree) {
  let index = 0;
  const result = {};
  const walk = (node) => {
    result[index++] = node;
    node.childNodes.forEach(walk);
  };
  walk(tree);
  return result;
}

function nextSibling(tree) {
  let index = 0;
  const result = {};
  const walk = (node) => {
    result[index++] = node;
    let child = node.firstChild;
    while(child) {
      walk(child);
      child = child.nextSibling;
    }
  };
  walk(tree);
  return result;
}