Script can contain javascript code without needing quotation marks. Below is a simple example:
<!DOCTYPE html>
<html>
<head>
<title>Script Tag Example</title>
<script>
function greet() {
alert("Hello from the script tag!");
}
</script>
</head>
<body>
<h1>Click the button to say hello</h1>
<button onclick="greet()">Greet</button>
</body>
</html>
This example however is calling a function. Notice that the script is usually called after the HTML elements have been set. This provides a base on which changes can be applied.