Iframe write to

Write to an iframe using the contentDocument property

by Chris

HTML

<iframe id="iframe_HYUTS" width="160" height="90" ></iframe>
<button id="myButton">Write</button>

JavaScript

document.getElementById('myButton').addEventListener('click', function() {
  var iframeDocument = document.getElementById('iframe_HYUTS').contentDocument;
  iframeDocument.open();
  iframeDocument.write('HYUTS');
  iframeDocument.close();
});