JSFiddle - React, Tailwind, and code Playground

HTML

<select id="dd">
    <option value="1">1</option>
    <option value="1">2</option>
</select>
<div id="1">Content of div 1</div>
<div id="2">Content of div 2</div>

JavaScript

$("#dd").change(function(){
    var selected= $("#dd option:selected").text();
    $('div').hide(); 
    $('#'+ selected).show(); 
    
});

$(document).ready(function(){
    $('div').hide();
});