<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<button id="btn-msg">Show message</button>
<button id="btn-generate">Generate item</button>
<p><strong id="tag">Tag:</strong></p>
<ul>
<li>Item 1</li>
<li>Item 2</li>
</ul>
<script>
document.onclick = e => tag.textContent = 'Tag: '+e.target.tagName;
</script>
</body>
</html>