Exercise:

Use a single var keyword to create three variables with the following values:
firstName = "John"
lastName = "Doe"
age = 35

Hint: Use the var keyword and separate the variables by comma.
Assign the specified value to each variable.

<!DOCTYPE html>
<html>
<body>

<p id="demo">Display the result here.</p> 

<script>
var firstName = "John", lastName = "Doe", age = 35;

document.getElementById("demo").innerHTML = 
firstName + " " + lastName + " is " + age;
</script>

</body>
</html>