title: 403 Forbidden AJAX request in Magento 2
body: <p>I am using Magento 2 i want to send an AJAX request from my custom js. </p>
  
  <p>Here is the code</p>
  
  <pre><code>    jQuery.ajax({
      method: "POST",
      url: "app/code/Preview/Tag/Block/Baz/getTitle",
      data: {data: doc.output()},
  }).done(function(data){
      console.log(data);
  });
  </code></pre>
  
  <p>But it returns 403 forbidden. </p>
  
  <p>Please let me know what is causing the issue.  </p>
  
  <p>Controller code:</p>
  
  <p>root_dir/app/code/Preview/Tag/Block/Baz.php</p>
  
  <pre><code>    &lt;?php
  namespace Preview\Tag\Block;
  
  /**
  * Baz block
  */
  class Baz extends \Magento\Framework\View\Element\Template
  {
      public function getTitle()
      {
          return "Foo Bar Baz";
      }
  }
  
  ?&gt;
  </code></pre>