JSFiddle - React, Tailwind, and code Playground

by CBroe

HTML

<button onclick="test()">Click to write in iframe</button>

<iframe id='ifr' src = "http://www.example.com/"></iframe>

JavaScript

function test(){
    var iframe = document.getElementById("ifr"),
        newIframe = document.createElement("iframe");
    iframe.parentNode.replaceChild(newIframe, iframe);
    (newIframe.contentDocument || newIframe.contentWindow.document).write("hello iframe");
}