<h2>Welcome to Pizza Shop</h2>
<button class="btn btn-primary btn-lg">Click me</button>
<h2>Welcome to Pizza Shop</h2>
<button class="btn btn-primary btn-lg" onclick="something()">Click me</button>

<script>
	function something()
	{
		alert('Hello!');
	}
</script>
Add alert message on click button
Add alert message on click button
