JSFiddle - React, Tailwind, and code Playground
HTML
<div id="res"></div>
JavaScript
htmlString = '<div class="aa">TextOne</div><ul><li>one</li></ul>';
textItem = 'TextOne';
tempdiv = $('<div/>');
tempdiv.html(htmlString);
ul = tempdiv.find('div.aa:contains('+textItem+')').next('ul')
$('#res').append(ul);