jQuery append vs jQuery html vs native innerHTML vs native DOM

JavaScript performance comparison

Revision 79 of this test case created by Shawn Terry

Info

Just a simple example showing the speed difference between populating a list with jQuery .append(), jQuery .html(), native innerHTML, and native DOM create & append.

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<div id="list" style="display:none">
</div>
<script>
Benchmark.prototype.setup = function() {
    var len = 20;
};
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
jquery .append()
for (var i = 0; i < len; i++) {
  var html = '<div>Test ' + i + '</div>';
  $('#list').append(html);
}
pending…
jQuery .html()
var html = '';
for (var i = 0; i < len; i++) {
  html += '<div>Test ' + i + '</div>';
}

$('#list').html(html);
pending…
native innerHTML
var list = document.getElementById('list');
for (var i = 0; i < len; i++) {
  list.innerHTML = list.innerHTML + '<div>Test ' + i + '</div>';
}
pending…
native DOM create & append
var list = document.getElementById('list');
var div = document.createElement("div");
for (var i = 0; i < len; i++) {
  div.appendChild(document.createTextNode("Test " + i));
}
list.appendChild(div);
pending…

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