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.
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https://jsperf.com/negative-modulo/2
Can be accessed at:
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Testing various ways to select last child element.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
var nodes = [];
for (i = 0; i < 10000; i++) {
nodes.push('<div class="abc item' + i + '"><span>node ' + i + '</span></div>');
}
$(document.body).append(nodes.join(''));
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
:last-child |
| ready |
.last() |
| ready |
.slice(-1) |
| ready |
qSA child selector |
| ready |
:last |
| ready |
.las() |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.