JSFiddle - React, Tailwind, and code Playground
HTML
<li id="0">
<i class="abc"></i>
TEST TEXT
</li>
JavaScript
$("#0").text(function() {
$(this).children().html() + "NEW TEXT");
});
<li id="0">
<i class="abc"></i>
TEST TEXT
</li>
$("#0").text(function() {
$(this).children().html() + "NEW TEXT");
});