hover vs mouseenter

JavaScript performance comparison

Test case created by Matt Mannello

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<ul id="leftNav">
  <li class="selected">
    <ul class="leftSubNav">
      <li><a href="#">test</a></li>
    </ul>
  </li>
</ul>
 

Preparation code output

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
live mouseenter mouseleave
 
/* set up hover functionality in subnav */
$('ul#leftNav li.selected ul.leftSubNav li:not([class*="selected"]) a').live('mouseenter mouseleave', function(e) {
 if (e.type == 'mouseover') {
  $(this).animate({
   left: '5px'
  }, 100);
 }
 else {
  $(this).animate({
   left: '0px'
  }, 100)
 }
});
 pending…
mouseenter mouseleave
 
$('ul#leftNav li.selected ul.leftSubNav li:not([class*="selected"]) a').mouseenter(

function() {
 $(this).animate({
  left: '5px'
 }, 100);
}).mouseleave(

function() {
 $(this).animate({
  left: '0px'
 }, 100)
});
 pending…
hover
 
$('ul#leftNav li.selected ul.leftSubNav li:not([class*="selected"]) a').hover(

function() {
 $(this).animate({
  left: '5px'
 }, 100);
}, function() {
 $(this).animate({
  left: '0px'
 }, 100);
});
 pending…

You can edit these tests or add even more tests to this page by appending /edit to the URL.

Compare results of other browsers

0 comments

Add a comment