JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="log" data-duh="x42" data-wtf="0x42"></ul>

JavaScript

var $log = $("#log");
$.each( $log.data(), function( key, value ) {
    key = "data-" + key;
    $("<li/>").appendTo($log).html(
        "data <kbd>" + $log.attr( key ) + "</kbd>" +
        " \u2192 " +
        typeof value + " <code>" + value + "</code>"
    );
});