<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0" >
</head>
<body>
<h1 id="our-heading"> Hello World </h1>
<!--All JavaScript Code goes within the script tags -->
<script>
document.getElementById("our-heading").innerHTML = "New Text";
</script>
</body>
</html>