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<!DOCTYPE html>
<html>
<head>
<title>
Dynamically change a web
page's title
</title>
</head>
<body>
<b>
Dynamically change a web
page's title
</b>
<p>
Click on the button to change the page
title to: "title changed!"
</p>
<button onclick="changePageTitle()">
Change Page Title
</button>
<script type="text/javascript">
function changePageTitle() {
newPageTitle = 'title changed!';
document.querySelector('title').textContent = newPageTitle;
}
</script>
</body>
</html>
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newPageTitle = 'title changed!';
document.querySelector('title').textContent = newPageTitle;