JSFiddle - React, Tailwind, and code Playground

HTML

<div id='container'>
  <div class='child'></div>
  <div class='child'></div>
  <div class='child'></div>
</div>

JavaScript

$(document).ready(function(){
	$('#container').data('list', $('#container').children() );
  
  var element = $( '<div>', { class: 'added' } );
  
  $('#container').data('list').push( element );
  $('#container').data('list').unshift( element );
  
  console.log( $('#container').data('list') );
});