jQuery index vs hasClass

JavaScript performance comparison

Revision 22 of this test case created

Info

Test which is faster, index compared to hasClass.

Preparation code

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

<section>
<article></article>
<article class="foo" data-foo="1"></article>
<article class="bar"></article>
<article></article>
</section>

<script>
  var found = false;
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
hasClass
if ($("article").hasClass("foo")) {
 found = true;
}
pending…
index
if ($("article").index() === 0) {
 found = true;
}
pending…
data
if ($("article").data("foo") === 1) {
 found = true;
}
pending…
attr
if ($("article").attr("data-foo") === '1') {
 found = true;
}
pending…

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