JSFiddle - React, Tailwind, and code Playground

HTML

<iframe src="http://www.w3schools.com/php/demo_func_time.php" id="iframe_box"></iframe>

JavaScript

function do_reload(){
    document.title = "Title";
    document.getElementById('iframe_box').src='http://www.w3schools.com/php/demo_func_time.php'
    document.title = "Title";
}

window.setInterval("do_reload()", 1000);