<html>
<body>
<h3>A demonstration of how to access an IFRAME element</h3>
<iframe id="myFrame" src="../default.html"></iframe>
<p>Click the button to get the URL of the iframe.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myFrame").src;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
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</html>