JSFiddle - React, Tailwind, and code Playground

HTML

<div id="placeHolder" style="display:none">
    <div id="1">test1</div>
    <div id="2">test2</div>  
    <div id="3">test3</div>      
</div>

<div id="mainDiv"></div>

JavaScript

$('#mainDiv').append($('#1')); //to append div with id 1
  $('#mainDiv').append($('#2'));