JSFiddle - React, Tailwind, and code Playground
by yoowordpress
HTML
<select id="one">
<option value="">выбрать</option>
<option value="1">1</option>
<option value="2">2</option>
</select>
<select id="two">
<option value="">выбрать</option>
<option value="1">1</option>
<option value="2">2</option>
</select>
JavaScript
$('select').change(function(){
var $selekted = $this.val();
$("select [value='" + $selekted + "']").attr("selected", "selected");
})