<!DOCTYPE html>
<html>
<head>
<title>JavaScript Example</title>
<script>
// JavaScript code
function greet() {
var name = document.getElementById("nameInput").value;
var greeting = "Hello, " + name + "!";
document.getElementById("output").textContent = greeting;
}
</script>
</head>
<body>
<h1>JavaScript Example</h1>
<label for="nameInput">Enter your name:</label>
<input type="text" id="nameInput">
<button onclick="greet()">Greet</button>
<p id="output"></p>
</body>
</html>