<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Variables</h1>
<p>Strings are written with quotes.</p>
<p>Numbers are written without quotes.</p>
<p>Try to experiment with the // comments.</p>
<p id="demo"></p>
<script>
var pi = 3.14;
var person = "John Doe";
var answer = 'Yes I am!';
//document.getElementById("demo").innerHTML = pi;
document.getElementById("demo").innerHTML = person;
//document.getElementById("demo").innerHTML = answer;
</script>
</body>
</html>