JSFiddle - React, Tailwind, and code Playground

by jitter

HTML

<ul id="list1">
    <li>
        <span class="label">List 1 Item 1</span>
        <ul id="list2">
            <li>
                <span class="label">List 2 Item 1</span>
            </li>
            <li>
                <span class="label">List 2 Item 2</span>
            </li>
        </ul>
    </li>
    <li>
        <span class="label">List 1 Item 2</span>
    </li>
</ul>

<div>Output:</div>
<div id="output"></div>

JavaScript

var selection = $("#list1").children("li");

selection.each(function() {
    $("#output").append($(".label", this).html() + "<br />");
});