JSFiddle - React, Tailwind, and code Playground

HTML

<div class="gauche largeur640px gras" id="tabs0"><div class="gauche largeur640px" style="padding: 10px 0;">
								<div class="gauche gras" style="width: 150px;">
									Lundi								</div>
								
								<div class="gauche centrer" style="width: 340px;">
									<div class="gauche centrer" style="width: 340px;">
										<input type="hidden" name="tabs[0][1][jour]" value="1">
										De <input type="time" name="tabs[0][1][from_h]" id="tabs[0][1][from_d]" step="1" min="00:00" max="23:59" value="00:00" class="margeHautMoins4px"> à 
										<input type="time" name="tabs[0][1][from_f]" id="tabs[0][1][from_f]" step="1" min="00:00" max="23:59" value="00:00" class="margeHautMoins4px"><br>
									</div>
									<div id="tabs01"></div>
								</div>
								
								<div class="gauche" style="margin-left: 50px;">									<div onclick="addRow(0,1);" class="gauche contentBulle marge0_5"><div class="bulle"><div class="contentBulleFleche"></div><div class="contentBulleDescription" style="font-weight: normal;font-size: 13px;">Ajouter une tranche horaire.</div></div><img src="https://cdn2.iconfinder.com/data/icons/freecns-cumulus/16/519691-199_CircledPlus-16.png" width="16" height="16" alt=""></div>
									<div onclick="delRow(0,1);" class="gauche contentBulle marge0_5"><div class="bulle"><div class="contentBulleFleche"></div><div class="contentBulleDescription" style="font-weight: normal;font-size: 13px;">Supprimer une tranche horaire.</div></div><img src="https://cdn2.iconfinder.com/data/icons/freecns-cumulus/16/519643-144_Forbidden-16.png" width="16" height="16" alt=""></div>									</div>
                                    </div></div>

JavaScript

function addRow(num_tab, num_jour) {
	$('<div class="gauche centrer" style="width: 340px; margin-top: 10px;"><input type="hidden" name="tabs[' + num_tab + '][' + num_jour	+ '][jour]" value="' + num_jour + '">De <input type="time" name="tabs[' + num_tab + '][' + num_jour + '][from_h]" id="tabs[' + num_tab + '][' + num_jour + '][from_d]" step="1" min="00:00" max="23:59" value="00:00" class="margeHautMoins4px" /> à <input type="time" name="tabs[' + num_tab + '][' + num_jour + '][from_f]" id="tabs[' + num_tab + '][' + num_jour + '][from_f]" step="1" min="00:00" max="23:59" value="00:00" class="margeHautMoins4px" /></div><br />').insertAfter( "#tabs" + num_tab + "" + num_jour + "" );
}