Run results for: Modern dataset vs old .getAttribute() vs jQuery .data() vs jQuery .attr() vs DOM node variable

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36

Browser: Chrome 90

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
dataset	1154500.0 Ops/sec
getAttribute	1183446.0 Ops/sec
jQuery .data()	34103.3 Ops/sec
jQuery .attr()	34458.8 Ops/sec
variable	1172754.0 Ops/sec

HTML Preparation code:

<h3 id="data" data-test="text">kipr202 header</h3>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js" integrity="sha512-bLT0Qm9VnAYZDflyKcBaQ2gg0hSYNQrJ8RilYldYQ1FxQYoCLtUjuuRuZo+fjqhx/qtq/1itJ0C2ejDxltZVFg==" crossorigin="anonymous"></script>

Script Preparation code:

window.onload = function() {
  document.querySelector("h3#data").test = 'text';
}

Tests:

dataset
window.onload = function() { document.querySelector("h3#data").dataset.test; }
getAttribute
window.onload = function() { document.querySelector("h3#data").getAttribute("test"); }
jQuery .data()
$(document).ready(function() { $("h3#data").data("test"); });
jQuery .attr()
$(document).ready(function() { $("h3#data").attr("data-test"); });
variable
window.onload = function() { document.querySelector("h3#data").test; }