append vs innerHTML list performance

JavaScript performance comparison

Revision 255 of this test case created by Sergey Lugovykh

Preparation code

<script src="https://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

<div id="list" style="display:none"> </div>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
innerHTML — Concat
var html = [];
for (var i = 0; i < len; i++) {
  html.push('<div>Test ' + i + '</div>');
}

document.getElementById('list').innerHTML = html.join('');
pending…
append
var list = document.getElementById('list');
for (var i = 0; i < len; i++) {
  var item = document.createElement('div');
  item.append('Test ' + i);
  list.append(item);
}
pending…
append — outside loop
var list = document.getElementById('list');
var items = [];
for (var i = 0; i < len; i++) {
  var item = document.createElement('div');
  item.append('Test ' + i);
  items.push(item);
}
list.append(...items);
pending…
innerHTML
var html = '';
for (var i = 0; i < len; i++) {
  html += '<div>Test ' + i + '</div>';
}

document.getElementById('list').innerHTML = html;
pending…

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Revisions

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