title: JQuery post returns querystring in address bar
body: <p>I am developing a web form in JQuery and sending via post to a PHP page. </p>
  
  <p>It looks like this:</p>
  
  <pre><code>$('#form-signup').submit(function(e)
  {
      $.ajax(
      {
          type: 'POST',
          data: { name: $('#name').val() },
          url: 'signup_backend.php',
          success: function(data, textStatus, jqXHR)
          {
          },
          error: function(jqXHR, textStatus, errorThrown)
          {
              alert('error');
          }
      });
  </code></pre>
  
  <p>My web form looks like this:</p>
  
  <pre><code>&lt;form id="form-signup" action=""&gt;
      &lt;fieldset&gt;
          &lt;label for="name"&gt;Nome&lt;/label&gt;
          &lt;input type="text" id="name" name="name" value="&lt;?=$name?&gt;"&gt;&lt;span class="required"&gt;*&lt;/span&gt;
      &lt;/fieldset&gt;
      &lt;fieldset&gt;
          &lt;label for="email"&gt;Email&lt;/label&gt;
          &lt;input type="email" id="email" name="email" value="&lt;?=$email?&gt;"&gt;&lt;span class="required"&gt;*&lt;/span&gt;
      &lt;/fieldset&gt;
      &lt;fieldset&gt;
          &lt;label for="tel"&gt;Telefone&lt;/label&gt;&lt;input type="tel" id="tel" name="tel" value="&lt;?=$tel?&gt;"&gt;&lt;span class="required"&gt;*&lt;/span&gt;
      &lt;/fieldset&gt;
      &lt;fieldset&gt;
          &lt;div&gt;
              &lt;label class="blocker"&gt;Tipo de anunciante&lt;/label&gt;&lt;span class="required"&gt;*&lt;/span&gt;
          &lt;/div&gt;
          &lt;input type="radio" name="advertiser" id="advertiser_1"&gt;
          &lt;label for="advertiser_1" class="aleft"&gt;Particular&lt;/label&gt;
          &lt;input type="radio" name="advertiser" id="advertiser_2"&gt;
          &lt;label for="advertiser_2" class="aleft"&gt;Imobiliária&lt;/label&gt;
      &lt;/fieldset&gt;
      &lt;fieldset&gt;
          &lt;label for="password"&gt;Senha&lt;/label&gt;
          &lt;input type="password" id="password" name="password" value="&lt;?=$password?&gt;"&gt;&lt;span class="required"&gt;*&lt;/span&gt;
      &lt;/fieldset&gt;
      &lt;fieldset&gt;
          &lt;label for="check-password"&gt;Confirmação da senha&lt;/label&gt;
          &lt;input type="password" id="check-password" name="check_password" value="&lt;?=$check_password?&gt;"&gt;&lt;span class="required"&gt;*&lt;/span&gt;
      &lt;/fieldset&gt;
      &lt;fieldset&gt;
          &lt;input type="submit" value="Enviar" id="sub"&gt;
      &lt;/fieldset&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>When I get the return, my Address shows this:</p>
  
  <pre><code>http://localhost:8888/guia/web/adm/signup.php?name=John&amp;email=&amp;tel=&amp;password=&amp;check_password=
  </code></pre>
  
  <p>Is there a way to avoid these data from my address bar?</p>
  
  <p>Thanks guys</p>