Jquery vs native - selector and element style (v28)

Revision 28 of this benchmark created on

Preparation HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

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

Setup

function hasClass(el, className) {
    if (el.classList)
      return el.classList.contains(className);
    else
      return 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
$('ul.first')
  .find('.foo')
  .css('background-color', 'red')
  .end()
  .find('.bar')
  .css('background-color', 'green')
  .end();
ready
native javascript
var e = document.querySelector("ul.first");

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

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

elfoo.style.backgroundColor = 'red';
elbar.style.backgroundColor = 'green';
ready
native js no queryselector
var e = document.getElementsByTagName("ul");
for (var j = 0; j < e.length; j++) {
  if (hasClass(e[j], "first")) {
    e = e[j];
    break;
  }
}

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

  if (hasClass(e.children[i], 'bar'))
    e.children[i].style.backgroundColor = 'green';
}
ready

Revisions

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