Смена селекта через радио
https://toster.ru/q/392135
by yoowordpress
HTML
<div>
<input id="rr" data-number="0" type="radio" name="changed" val="rr">
<label for="rr">rr</label>
<input id="aa" data-number="1" type="radio" name="changed" val="aa">
<label for="aa">aa</label>
<input id="vv" data-number="2" type="radio" name="changed" val="vv">
<label for="vv">vv</label>
</div>
<select name="target">
<option value="rr">rr</option>
<option value="aa">aa</option>
<option value="vv">vv</option>
</select>
JavaScript
jQuery(document).on('change','input[type=radio]',function() {
$(this).parent().next().prop('selectedIndex', $(this).data("number")).change();
});
jQuery(document).on('change','select',function() {
alert('ok');
});