JSFiddle - React, Tailwind, and code Playground

HTML

<div id="siteloader">
  <object id="object1" data="" />
</div>

CSS

html, body {
    height: 100%;
}

div {
    height: 99%;
}

iframe {
    width: 100%;
    min-height: 100%;
}

JavaScript

$(function() {
$("#object1").load(function() {
	$(this).contents().find("#lemail_id").val("lemail_id")
});
   $("#object1").attr('data', 'http://testk.shopnix.org/admin');
});