JSFiddle - React, Tailwind, and code Playground
HTML
<div id="foo" data-region="San Francisco">Hello</div>
<ul id="my-list">
<li data-crypto-value="1.23">$51234</li>
<li data-crypto-value="2.46">$102468</li>
</ul>JavaScript
console.log(document.querySelector("#foo").dataset);
console.log(document.querySelector("#foo").dataset.region);
document.querySelectorAll("#my-list li").forEach(e => console.log(e.dataset.cryptoValue));