title: Javascript - Why is alert() ignored in my program
body: <p>I'm just learning javascript using a book and they give this example:</p>
  
  <pre><code>&lt;!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN”
  “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”&gt;
  &lt;html xmlns=”http://www.w3.org/1999/xhtml”&gt;
  &lt;body&gt;
  &lt;script language=”JavaScript” type=”text/javascript”&gt;
  var firstNumber = 15;
  var secondNumber = 10;
  var answer;
  answer = 15 / 10;
  alert(answer);
  alert(15 / 10);
  answer = firstNumber / secondNumber;
  alert(answer);
  &lt;/script&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>When I load it, alert only pops up twice instead of three times. Why is this?</p>