hasClass-vs-is

JavaScript performance comparison

Revision 4 of this test case created

Preparation code

<span class="class5">
  Element
</span>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<script>
Benchmark.prototype.setup = function() {
    var element = $('span');
};
</script>

Preparation code output

Element

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Testing in unknown unknown
Test Ops/sec
hasClass
if (element.hasClass('class1') || element.hasClass('class2') || element.hasClass('class3')) {
  console.log("hasClass");
}
pending…
is
if (element.is('.class1, .class2, .class3')) {
  console.log("is");
}
pending…
loop
var selectors = ['class1', 'class2', 'class3'];
for (i in selectors) {
  if (element.hasClass(selectors[i])) {
    console.log("loop")
    break;
  }
}
pending…

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