JSFiddle - React, Tailwind, and code Playground

JavaScript

var $p = $("<p>");
$p.data('luggagecode', '12345');
$p.data('luggagecode_backup', '54321');

for (var key in $p.data()) {
    var value = $p.data(key);
    alert('DATA | '+key+' = '+value);
}

var $p2 = $("<p>");
$p2.prop('luggagecode', '12345');
$p2.prop('luggagecode_backup', '54321');

for (var key in $p2.prop()) {
    var value = $p2.prop(key);
    alert('PROP | '+key+' = '+value);
}