JSFiddle - React, Tailwind, and code Playground

HTML

<select id="ddlTo">
	<option value="0"></option>
	<option value="master">master</option>
	<option value="user1">user1</option>
</select>
<div id="div1"></div>

JavaScript

$(function() {
         
        $('#ddlTo').on("change", function() {
                 $("#div1").html($(this).val());
             })
        
        start();
    });

function start(){
     $('#ddlTo').val("master");
}