JSFiddle - React, Tailwind, and code Playground

HTML

<div class="demo">
<ol id="selectable">
    <li class="ui-widget-content">Item 1</li>
    <li class="ui-widget-content">Item 2</li>
    <li class="ui-widget-content">Item 3</li>
    <li class="ui-widget-content">Item 4</li>
    <li class="ui-widget-content">Item 5</li>
    <li class="ui-widget-content">Item 6</li>
</ol>
</div>
<!-- End demo -->

CSS

#selectable .ui-selecting { background: #FECA40; }
#selectable .ui-selected { background: #F39814; color: white; }
#selectable { list-style-type: none; margin: 0; padding: 0; width: 60%; }
#selectable li { margin: 3px; padding: 0.4em; font-size: 1.4em; height: 18px; }
.ui-selectable-helper { position: absolute; z-index: 100; background:#039; filter:alpha(opacity=50); -moz-opacity:0.5; -khtml-opacity: 0.5; opacity: 0.5;  border: 1px solid black; }

JavaScript

$(function() {
  $("#selectable").selectable();
  
  $('*').click(function(){
    console.log(this);
  });
});