nextSibling vs childNodes vs children (v26)

Revision 26 of this benchmark created by mixed on

Description

Test the relative performance of iterating through child nodes using nextSibling vs iterating through the childNodes array vs iterating through the children array.

Preparation HTML

<div id="container">
<p>Child</p>
<p>Child</p>
<p>Child</p>
<p>Child</p>
<p>Child</p>
<p>Child</p>
<p>Child</p>
<p>Child</p>
<p>Child</p>
<p>Child</p>
</div>
<script>
  var container = document.getElementById('container');
  
  function process(element) {}
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
childNodes
var len = container.childNodes.length,
    i;
for (i = 0; i < len; i++) {
 process(container.childNodes[i]);
}
ready
childNodes, cached
var nodes = container.childNodes,
    len = nodes.length,
    i;
for (i = 0; i < len; i++) {
 process(nodes[i]);
}
ready
nextSibling
var node = container.firstChild;
while (node) {
 process(node);
 node = node.nextSibling;
}
ready
children
var nodes = container.children,
    len = nodes.length,
    i;
for (i = 0; i < len; i++) {
 process(nodes[i]);
}
ready

Revisions

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