title: Jquery with Ajax and PHP not working
body: <p>I am trying to brush up on my jquery and ajax. In Jquery in 8 hours there is this:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;htmlxmlns="http://www.w3.org/1999/xhtml"&gt;
  &lt;head&gt;
  &lt;title&gt;A JQuery Sample Program&lt;/title&gt; 
  &lt;script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"&gt;
  &lt;/script&gt;
  &lt;script type="text/javascript"&gt; 
  $(function() {
  $.ajax({
  type:"POST",
  url:"postFile.php",
  data: {data:100},
  success:function(data) {
  $("div").html(data);} });}); 
  &lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt; 
  Response: &lt;div&gt;&lt;/div&gt;
  &lt;/body&gt;&lt;/html&gt;
  </code></pre>
  
  <p>and postFile.php is this:</p>
  
  <pre><code>&lt;?php
  if ($_POST["data"]=="100") {echo "100";}
  ?&gt;
  </code></pre>
  
  <p>I'm running this under IISExpress. BUT all I get from the browser (Chrome) is method not allowed in jquery.min.js:4. This seems so simple and yet, doesn't work.</p>