JSFiddle - React, Tailwind, and code Playground

by JWells

HTML

<select class="soma1">
    <option>item1</option>
    <option>item2</option>
    <option>item3</option>
    <option>item4</option>
</select>

<select class="soma2">
    <option>item1</option>
    <option>item2</option>
    <option>item3</option>
    <option>item4</option>
</select>

JavaScript

$('.soma1').change(function () {
    var selectedItem = $('.soma1').find('option:selected');
    $('.soma2').find('option').each(function(){
        if (selectedItem.html() != $(this).html()){
            $(this).remove();
        }
    });
});