JSFiddle - React, Tailwind, and code Playground

HTML

<div id="left">
    <ul class="cmdSelected">
        <li class="cmdTitle">Test Case D</li>
            <li class="cmdTypeE">GPP1<span hidden>143</span></li>
            <li class="cmdTypeE">GPP2<span hidden>146</span></li>               
            <li class="cmdTypeF">UDA<span hidden>0</span></li>
            <li class="cmdTypeB">Complete<span hidden>1</span></li>
    </ul>
</div>

JavaScript

$(document).ready(function() {
$( "li.cmdTypeE" ).on("click", function() {
    var selected = $(this).contents().filter(function() { return this.nodeType == 3; }).text();
    alert(selected);
    });
});