Untitled

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
// write your code below

 var petName = "Rover";

 var age = 8;

 var favoriteToy = "ball";

 petName;
 age;
 favoriteToy;

 petName = "Arthur";

 age = 5;

 favoriteToy = "yarn";

 petName;
 age;
 favoriteToy;

 typeof petName;
 typeof age;
 typeof favoriteToy;
</script>


<script id="jsbin-source-javascript" type="text/javascript">// write your code below

 var petName = "Rover";

 var age = 8;

 var favoriteToy = "ball";

 petName;
 age;
 favoriteToy;

 petName = "Arthur";

 age = 5;

 favoriteToy = "yarn";

 petName;
 age;
 favoriteToy;

 typeof petName;
 typeof age;
 typeof favoriteToy;</script></body>
</html>