JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li class="randomnumber">result 1</li>
    <li class="randomnumber">result 2</li>
    <li class="randomnumber">result 3</li>
</ul>

JavaScript

$(function () {
    $('.randomnumber').click(function () {
        var $this = $(this);
        $this.data('id', $this.data('id') || Math.floor(100000 + Math.random() * 900000));
        alert( $this.data('id') );
    });
});