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<!DOCTYPE html>
<html>
<head>
<title>Same-Origin Iframe</title>
</head>
<body style="padding: 10px; background: #fff;">
<h3>Same-Origin Iframe Content</h3>
<button id="iframe-btn">Iframe Button</button>
<input type="text" id="iframe-input" placeholder="Iframe input" />
<script>
// When button is clicked, increment counter in parent page using addEventListener
document.getElementById('iframe-btn').addEventListener('click', function() {
if (window.parent && window.parent !== window) {
// Call parent's incrementCounter function
window.parent.incrementCounter('Same-Origin Iframe');
}
});
</script>
</body>
</html>
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