JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="breadcrumb" id="list">
    <li>test</li>
    <li>test</li>
</ul>

JavaScript

var theObject = document.getElementsByClassName("breadcrumb");
var list = theObject.children;
for(var i = 0; i < list.length; i++) {
    alert(list[i].innerHTML);
}