JSFiddle - React, Tailwind, and code Playground

HTML

<div id="divHtml">
    <ul id="pnrTree" class="ui-widget-daredevel-checkboxTree ui-widget ui-widget-content"><li class="expanded"><ul style=""><li class="expanded"><input class="checktree" type="checkbox" checked="checked"><label>PNR</label><ul style=""><li class="expanded"><input class="checktree" type="checkbox" checked="checked"><label>Segments</label><ul style=""><li class="expanded"><input class="checktree" type="checkbox" checked="checked"><label>AirSegment</label><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>segmentNumber</label></li></ul><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>supplierName</label></li></ul><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>supplierConfNum</label></li></ul><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>startDateTime</label></li></ul><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>endDateTime</label></li></ul><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>bookingSiteConfNum</label></li></ul><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>departureTerminal</label></li></ul><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>departureAirportCode</label></li></ul><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>arrivalTerminal</label></li></ul><ul style=""><li class="leaf"><input class="checktree" type="checkbox" checked="checked"><label>arrivalAirportCode</label></li></ul><ul style=""><li class="expanded"><input class="checktree" type="checkbox" checked="checked"><label>MarketingFlight</label><ul style=""><li class="leaf"><input class="checktree" type="checkbox"...

JavaScript

$('divHtml').removeClass();