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
To modify the actual context of a selector (i.e. cause it to not search the default context - the entire document node - but instead scope to only the specified node) the context attribute must be a DOM Node - not a jQuery selector or even a jQuery collection. If a jQuery selector or collection is used, context acts simply as a wrapper for .find (and will therefore always be slower.)
src: http://brandonaaron.net/blog/2009/06/24/understanding-the-context-in-jquery
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id='myDiv'>
<p>hello <a href="http://www.example.com/"><span class="mySpan">link</span></a></p>
<p>world <a href="http://www.example.com/"><span class="mySpan">link</span></a></p>
</div>
<script>
if (!window.console || !window.console.log) {
throw 'console.log() is not supported. Please install Firebug. http://getfirebug.com'
}
</script>
var $myDiv = $("#myDiv"),
myDiv = $myDiv[0];
Ready to run.
Test | Ops/sec | |
---|---|---|
.find() |
| ready |
context |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.