<html>
<body>
<h1>JavaScript Statements</h1>
<h2>The if...else Statements</h2>
<p>Display a time-based greeting:</p>
<p id="demo"></p>
<script>
let hour = new Date().getHours();
let greeting;
if (hour < 20) {
greeting = "Good day";
} else {
greeting = "Good evening";
}
document.getElementById("demo").innerHTML = greeting;
</script>
</body>
</html>