<html>
<head>
<title>Chaining</title>
</head>
<body>
<button>Button 1</button>
<button>Button 2</button>
<button onclick="document.getElementById('input-1').value = 'clicked'">Custom Button</button>
<input id="input-1"/>
<div class="result-1">Result 1</div>
</body>
</html>