JSFiddle - React, Tailwind, and code Playground

HTML

<a data-value="2.0">2.0</a>
<a data-value="2.5">2.5</a>

CSS

a {
    display:block;
    font-size:20px;
    padding:20px;
    color:#fdfdfd;
    background-color:#ff0099;
    cursor:pointer;
    font-family:sans-serif;
    margin:10px;
}

JavaScript

$("a").click(function() {
    alert(typeof $(this).data( "value"));   
});