Begin Writing JS
Step 1.  Build HTML structure and first
command. Check
* Begin by inputting a number
<html><head><title>Lecture 12</title></head>
  <body>
  <h2>Sample Program</h2>
  <form name="sample">
    Give a number
    <input type=“text” name=“x1” size=3>
  </form>
  </body>
</html>