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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>iframe creation/deletion test</title>
</head>
<body>
<div id="yay"></div>
<script type="text/javascript">
"use strict";
var yay = document.querySelector("#yay");
yay.textContent = "nothing";
// Create a promise that the test can wait for.
let resolveReadyPromise;
window.readyPromise = new Promise(r => (resolveReadyPromise = r));
// Create/remove an iframe before load.
var iframe = document.createElement("iframe");
document.body.appendChild(iframe);
iframe.remove();
yay.textContent = "before events";
// Create/remove an iframe on DOMContentLoaded.
document.addEventListener("DOMContentLoaded", function() {
const newIframe = document.createElement("iframe");
document.body.appendChild(newIframe);
newIframe.remove();
yay.textContent = "DOMContentLoaded";
});
// Create/remove an iframe on window load.
window.addEventListener("load", function() {
const newIframe = document.createElement("iframe");
document.body.appendChild(newIframe);
newIframe.remove();
yay.textContent = "load";
resolveReadyPromise();
});
</script>
</body>
</html>
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