JSFiddle - React, Tailwind, and code Playground

HTML

<select id="my_select">
    <option>Option 1</option>
    <option>Option 2</option>
</select>

JavaScript

my_condition = true;
var lastSel = $("#my_select option:selected");

$("#my_select").change(function(){
  if(my_condition)
  {
    lastSel.attr("selected", true);
  }
});

$("#my_select").click(function(){
    lastSel = $("#my_select option:selected");
});