jQuery: cannot conditionally add class to children elements - html

Question

I am trying to conditionally add the class "closed-3" to all the children "input" elements of an ancestor. The ancestor should contain the classes ".summon-next-element.on-sub-sub-level". However, I get no effect - no class added, no error in the console, nothing. Here is the jQuery:
$('.summon-next-element.on-sub-sub-level').each(function() {
if ($(this).find("input").is(":checked")) {
$(this).nextAll(".summoned-element").first().find("input").addClass("opened-3").removeClass("closed-3");
} else {
$(this).nextAll(".summoned-element").first().find("input").addClass("closed-3").removeClass("opened-3");
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="summon-next-element on-sub-sub-level">
<input type="radio" name="frais_renovation" id="frais_renovation_oui" class="oui">
<label for="frais_renovation_oui">oui</label>
</div>
<div class="checkbox">
<input type="radio" name="frais_renovation" id="frais_renovation_non" class="non">
<label for="frais_renovation_non">non</label>
</div>
<div class="summoned-element">
<div class="checkbox info-circle right">
<input type="radio" name="frais_renovation_justificatifs" id="frais_renovation_fichier">
<label for="frais_renovation_fichier">
Mes justificatifs 1
</label>
</div>
<div class="checkbox info-circle right">
<input type="radio" name="frais_renovation_justificatifs" id="frais_renovation_tickets" checked>
<label for="frais_renovation_tickets">
Mes justificatifs 2
</label>
</div>
</div>
<!-- end of summoned element -->
Thank you so much for your help!

Answer 1

It is also necessary to wrap your logic in the radio button selection event, according to which the reduced assignment / deletion of classes will take place:
$(this).on('click', function() { ... }
In your code, there was also an incorrect class reference.
$('div').find('input[type=radio]').each(function() {
$(this).on('click', function() {
$('input[type=radio]').addClass("closed-3").removeClass("opened-3");
if ($(this).is(":checked")) {
$(this).addClass("opened-3").removeClass("closed-3");
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="summon-next-element on-sub-sub-level">
<input type="radio" name="frais_renovation" id="frais_renovation_oui" class="oui">
<label for="frais_renovation_oui">oui</label>
</div>
<div class="checkbox">
<input type="radio" name="frais_renovation" id="frais_renovation_non" class="non">
<label for="frais_renovation_non">non</label>
</div>
<div class="summoned-element">
<div class="checkbox info-circle right">
<input type="radio" name="frais_renovation_justificatifs" id="frais_renovation_fichier">
<label for="frais_renovation_fichier">
Mes justificatifs 1
</label>
</div>
<div class="checkbox info-circle right">
<input type="radio" name="frais_renovation_justificatifs" id="frais_renovation_tickets" checked>
<label for="frais_renovation_tickets">
Mes justificatifs 2
</label>
</div>
</div>
<!-- end of summoned element -->

Answer 2

Problem is that you are not looping over each of the inputs, so when you check if the input is checked, it will always select the first inside .on-sub-sub-level.
Try with:
$('.summon-next-element.on-sub-sub-level ~ .summoned-element input').each(function() {
if ($(this).is(":checked")) {
$(this).addClass("opened-3").removeClass("closed-3");
} else {
$(this).addClass("closed-3").removeClass("opened-3");
}
});
Demo
$('.summon-next-element.on-sub-sub-level ~ .summoned-element input').each(function() {
if ($(this).is(":checked")) {
$(this).addClass("opened-3").removeClass("closed-3");
} else {
$(this).addClass("closed-3").removeClass("opened-3");
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="summon-next-element on-sub-sub-level">
<input type="radio" name="frais_renovation" id="frais_renovation_oui" class="oui">
<label for="frais_renovation_oui">oui</label>
</div>
<div class="checkbox">
<input type="radio" name="frais_renovation" id="frais_renovation_non" class="non">
<label for="frais_renovation_non">non</label>
</div>
<div class="summoned-element">
<div class="checkbox info-circle right">
<input type="radio" name="frais_renovation_justificatifs" id="frais_renovation_fichier">
<label for="frais_renovation_fichier">
Mes justificatifs 1
</label>
</div>
<div class="checkbox info-circle right">
<input type="radio" name="frais_renovation_justificatifs" id="frais_renovation_tickets" checked>
<label for="frais_renovation_tickets">
Mes justificatifs 2
</label>
</div>
</div>
<!-- end of summoned element -->