jQuery append vs html vs innerHTML list performance

JavaScript performance comparison

Revision 97 of this test case created by Alejandro Narvaez

Info

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

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.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…
javascript innerHTML
var list = document.getElementById('list');
for (var i = 0; i < len; i++) {
  list.innerHTML = list.innerHTML + '<div>Test ' + i + '</div>';
}
pending…
Concat
var html = [];
for (var i = 0; i < len; i++) {
  html.push('<div>Test ' + i + '</div>');
}

document.getElementById('list').innerHTML = html.join('');
pending…
String
var strHtml = '';
for (var i = 0; i < len; i++) {
  strHtml +='<div>Test ' + i + '</div>';
}

document.getElementById('list').innerHTML = strHtml ;
pending…
Jquery mobile AppendTo/Enhanced
var strHtml = '';
for (var i = 0; i < len; i++) {
  strHtml +='<div>Test ' + i + '</div>';
}

$(strHtml).appendTo("#list").enhanceWithin();
pending…
InnerHtml with Enhanced
var strHtml = '';
for (var i = 0; i < len; i++) {
  strHtml +='<div>Test ' + i + '</div>';
}

var lst=document.getElementById('list');
lst.innerHTML = strHtml ;

$(lst).enhanceWithin();
pending…
empty element Jquery
var strHtml = '';
for (var i = 0; i < len; i++) {
  strHtml +='<div>Test ' + i + '</div>';
document.getElementById('list').innerHTML = strHtml ;
}
$("#list").empty();
pending…
empty element innerHtml
var strHtml = '';
var lst=document.getElementById('list');
for (var i = 0; i < len; i++) {
  strHtml +='<div>Test ' + i + '</div>';

lst.innerHTML = strHtml;

}
lst.innerHTML = '';
 
pending…
loop clear element
var strHtml = '';
var lst=document.getElementById('list');
for (var i = 0; i < len; i++)
{
  strHtml +='<div>Test ' + i + '</div>';
  lst.innerHTML = strHtml;
}
while (lst.firstChild)
{ lst.removeChild(lst.firstChild);}
pending…

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