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jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.

jsperf.com URLs are mirrored at the same path, e.g:

https://jsperf.com/negative-modulo/2

Can be accessed at:

https://jsperf.app/negative-modulo/2

Test case details

Title *

Description
(Markdown syntax is allowed)

Preparation Code

Preparation HTML
(this will be inserted in the <body> of a valid HTML5 document in standards mode)
(useful when testing DOM operations or including libraries)

<div id='wrap'>
<div id='box'></div>
</div>

Setup JS

function write()
  {
   var box = document.getElementById('box');
  var div = document.createElement('div');
  div.innerHTML = "halo <br> des <div>aaaa</div><table></table>";
  box.appendChild(div);
  
  }

Teardown JS

Test cases

Test #1

Title *

Async

Code *

write();
box.innerHTML = '';

Test #2

Title *

Async

Code *

write();
var dupNode = box.cloneNode(false);
box.parentNode.replaceChild(dupNode, box);

Test #3

Title *

Async

Code *

write();
while (box.removeChild(box.firstChild)) {}

Test #4

Title *

Async

Code *

write();
while (box.firstChild) {
  box.removeChild(box.firstChild);
}

Test #5

Title *

Async

Code *

write();
box.style.display='none';
box.innerHTML = '';
box.style.display='';

Test #6

Title *

Async

Code *

write();
box.innerText = '';