JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.cs"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <form id="mainForm" action="">
						<div class="contact-form bottom">
							<div id="lstPersons" name="lstPersons">
								<div class="row person" id="person0" name="person">
									<div class="col-md-3  col-sm-12">
										<select class="form-control" id="cat0" name="cat">
										  <option value="A" selected>Adulte</option>
										  <option value="E">Enfant</option>
										  <option value="B">B&eacute;b&eacute;</option>
										</select>
									</div>
									<div class="col-md-3  col-sm-12">
										<input type="text" id="prenom0" class="form-control firstname" required placeholder="Prénom" name="prenom" value="AAA" />
									</div>
									<div class="col-md-3  col-sm-12">
										<input type="text" id="nom0" class="form-control lastname" required placeholder="Nom" name="nom" value="AAA" />
									</div>
									<div class="col-md-2  col-sm-12">
										<input type="text" name="allergies" class="form-control allergies" placeholder="Allergies..."  id="allergies0"/>
									</div>
									<div class="col-md-1  col-sm-12">
									</div>
								</div>
                                                                <div class="row person" id="person1" name="person">
									<div class="col-md-3  col-sm-12">
										<select class="form-control" id="cat1" name="cat">
										  <option value="A" selected>Adulte</option>
										  <option value="E">Enfant</option>
										  <option value="B">B&eacute;b&eacute;</option>
										</select>
									</div>
									<div class="col-md-3  col-sm-12">
										<input type="text" id="prenom1" class="form-control firstname" required placeholder="Prénom" name="prenom" value="BBB" />
									</div>
									<div class="col-md-3...

JavaScript

function confirm_avail()
{
	console.log($('#mainForm').serializeArray());
}

/*Click on button to confirm*/
$('#btn-confirm').click(function() {
	confirm_avail();
});