JSFiddle - React, Tailwind, and code Playground
by Trisox
HTML
<div class="formBlock laatste hidden1" style="display: block;">
<div class="formInputContainter">
<label class="required">Factuuradres</label>
<input type="radio" name="postbusORstraat1" class="formRadioContainter" value="Postcode"><span class="radiobuttonSpan">Postbus.</span><input type="radio" checked="" class="formRadioContainter" name="postbusORstraat1" value="Straat"><span class="radiobuttonSpan">Straat</span>
</div>
</div>
<!-- Scheiding -->
<div class="formBlock laatste hidden1 adresKeuze" id="Straat">
<div class="formInputContainter">
<label class="required">Straat</label>
<input type="text">
</div>
<div class="formInputContainter">
<label class="required">Huisnr./Toevoeging</label>
<input type="text" class="first">
<input type="text" class="last">
</div>
<div class="formInputContainter">
<label class="required">Postcode/Plaats</label>
<input type="text" class="first">
<input type="text" class="last">
</div>
<div class="formInputContainter lastItem">
<label>Land</label>
<input type="text" value="Nederland">
</div>
</div>
<!-- Scheiding -->
<div class="formBlock laatste hidden1 adresKeuze" id="Postcode" >
<div class="formInputContainter">
<label class="required">Postbus</label>
<input type="text">
</div>
<div class="formInputContainter">
<label class="required">Postcode/Plaats</label>
<input type="text" class="first">
<input type="text" class="last">
</div>
<div class="formInputContainter lastItem">
<label>Land</label>
<input type="text" value="Nederland">
</div>
</div>
CSS
.adresKeuze { display: none; }
JavaScript
$(document).ready(function(){
$("input[name=postbusORstraat1]").change(function() {
var test = $(this).val();
$(".adresKeuze").hide();
$("#"+test).show();
});
});