title: Why does my HTTP request work in a form but not AJAX?
body: <p>I'm using "Woofoo" forms as a service, they give me this code:</p>
  
  <pre><code>&lt;form id="form1" name="form1" accept-charset="UTF-8" enctype="multipart/form-data" method="post" no validate action="https://kingofthestack.wufoo.com/forms/z116los31o2hqhx/#public"&gt;
    &lt;input id="Field1" name="Field1" type="email"/&gt;
    &lt;textarea id="Field4" name="Field4"&gt;&lt;/textarea&gt;
    &lt;input id="saveForm" name="saveForm" type="submit" value="Submit"/&gt;
    &lt;textarea name="comment" id="comment"&gt;&lt;/textarea&gt;
    &lt;input type="hidden" id="idstamp" name="idstamp" value="my-secret-key" /&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>It works in postman, but when I use postman's generated code in jQuery I get <code>Origin null is not allowed by Access-Control-Allow-Origin.</code></p>