JSFiddle - React, Tailwind, and code Playground

HTML

<iframe src="www.kaskus.com" id="correct">
    <p id="correctdata">This is the iframe's content.</p>
</iframe>

<input type="button" id="btn" value="Click Me">

JavaScript

$("#btn").live('click', function() {
    var iframe = $('#correct'),
        ele;
    
    ele = $('#info', iframe[0].contentDocument).text();
    console.log(ele);
});