Jquery vs native - selector and element style (v3)

Revision 3 of this benchmark created on

Preparation HTML

<script src="http://code.jquery.com/jquery-2.1.0.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)
  
  }
  
  function selector(selector, callback){
      var els = document.querySelector(selector);
      for (var i = 0; i < els.length; ++i) {
          callback(els[i]);
      }
  }

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.length; ++i) {
    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("ul.first .foo");
var elbar = document.querySelector("ul.first .bar");

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

for (var i = 0; i < elbar.length; ++i) {
    elbar[i].style.backgroundColor = 'green';
}
ready
native with convenience selector function
selector("ul.first .foo", function(element){
    element.style.backgroundColor = 'red';
});

selector("ul.first .bar", function(element){
    element.style.backgroundColor = 'green';
});
ready

Revisions

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