JSFiddle - React, Tailwind, and code Playground

HTML

<div id="message">message</div> 

<iframe src="http://google.com">

JavaScript

$(document).ready(function () {
    var iframe_src = $('iframe').attr('src');
    $('div#message').html(iframe_src);
    //$.load('file.php?src=' + iframe_src);
});