JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/themes/base/jquery-ui.css">
<div id="div" style="height:150px; border:solid thin blue;"></div>
<button id="cmd">get div height</button>

JavaScript

$('#div').resizable();

$('#cmd').button().click(function(){
    alert($('#div').height());
});