cloning in fragments

Benchmark created by Bergi on

Description

see Stackoverflow question: Why does cloneNode need to be used when appending a documentFragment?

Preparation HTML

<div id="test"></div>

Setup

function text(node, txt) {
       node.appendChild(document.createTextNode(txt));
       return node;
      }
      
      var o = document.getElementById('test'),
          aElms = [
       text(document.createElement('b'), 'Links:'), document.createTextNode(' '), text(document.createElement('a'), 'Link A'), document.createTextNode(' | '), text(document.createElement('a'), 'Link B'), document.createTextNode(' | '), text(document.createElement('a'), 'Link C'), document.createElement('hr')];

Test runner

Ready to run.

Testing in
TestOps/sec
no cloning
o.innerHTML = "";
var oFrag = document.createDocumentFragment();
for (var i = 0, imax = aElms.length; i < imax; i++)
    oFrag.appendChild(aElms[i]);
o.appendChild(oFrag);
ready
cloning each element
o.innerHTML = "";
var oFrag = document.createDocumentFragment();
for (var i = 0, imax = aElms.length; i < imax; i++)
    oFrag.appendChild(aElms[i].cloneNode(true));
o.appendChild(oFrag);
ready
cloning whole fragment
o.innerHTML = "";
var oFrag = document.createDocumentFragment();
for (var i = 0, imax = aElms.length; i < imax; i++)
    oFrag.appendChild(aElms[i]);
o.appendChild(oFrag.cloneNode(true));
ready

Revisions

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