JSFiddle - React, Tailwind, and code Playground

HTML

<div class="question_start">

<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" style="display: none;">
<input type="checkbox" style="display: none;">
<input type="checkbox" style="display: none;">

</div>

JavaScript

$(function () {

    $('.question_start input:checkbox').on('click', function () {
        var $visible_and_checked = $('.question_start input:checkbox:visible:checked');
        var $only_visible = $('.question_start input:checkbox:visible');
        
        if ($visible_and_checked.length == $only_visible.length) {
            alert('you checked all checkboxes');
        }
    });
    
});