Jquery vs native - selector and element style (v5)

Revision 5 of this benchmark created on

Preparation HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>

<ul class='first'>
<li class='foo'>
</li>
<li class='bar'>
</li>
</ul>

Setup

function hasClass(el, className) {
  
    if (el.classList)
      el.classList.contains(className)
    else
      new RegExp('(^| )' + className + '( |$)', 'gi').test(el.className)
  
  }

Teardown



            $('.foo').css('background-color', 'transparent');
  $('.bar').css('background-color', 'transparent');

Test runner

Ready to run.

Testing in
TestOps/sec
Jquery
$('.first')
  .find('.foo')
  .css('background-color', 'red')
  .end()
  .find('.bar')
  .css('background-color', 'green')
  .end();
ready
native javascript
var e = document.querySelector(".first"),
  i,
  len;

for (i = 0, len = e.length; i < len; i = i + 1) {
  if (hasClass(e[i], 'foo'))
    e[i].style.backgroundColor = 'red';

  if (hasClass(e[i], 'bar'))
    e[i].style.backgroundColor = 'green';
}
ready
native javascript two
var elfoo = document.querySelector(".first .foo"),
  elbar = document.querySelector(".first .bar"),
  i,
  len;

for (i = 0, len = elfoo.length; i < len; i = i + 1) {
  elfoo[i].style.backgroundColor = 'red';
}

for (i = 0, len = elbar.length; i < len; i = i + 1) {
  elbar[i].style.backgroundColor = 'red';
}
ready

Revisions

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