Integer on custom element property vs data-attribute

JavaScript performance comparison

Test case created

Preparation code

<div id="test-div">Some text inside...</div>
<script>
Benchmark.prototype.setup = function() {
    var div = document.getElementById('test-div');
   
    div.customProp = 1042;
    div.dataset.customProp = 1042;
};
</script>

Preparation code output

Some text inside...

Test runner

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Testing in unknown unknown
Test Ops/sec
Custom element property
return div.customProp;
pending…
Data-attribute
return Number(div.dataset.customProp);
pending…

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