JSFiddle - React, Tailwind, and code Playground

by Ilia Lesnykh

HTML

<ul class="events-list"></ul>

JavaScript

var li = document.createElement('li');
li.innerHTML = '<div class="event-item-date"><div>23</div><div class="event-item-date-weekday">пн</div></div>';
var ulElements = document.getElementsByClassName('events-list')
console.log(ulElements);
for (var i in ulElements) if (ulElements.hasOwnProperty(i)) {
    ulElements[i].appendChild(li);
}