title: Angular2 - SEO - how to manipulate the meta description
body: <p>Search Results in google are displayed via TitleTag and the <code>&lt;meta name="description"..."/&gt;</code> Tag.
  The <code>&lt;title&gt;</code>-Tag is editiable via Angular2 <a href="https://stackoverflow.com/questions/34602806/how-to-change-page-title-in-angular2-router">how to change page title in angular2 router</a></p>
  
  <p>What's left is the description.</p>
  
  <p>Is it possibile to write a directive in angular2, that manipulates the meta-tags in the <code>&lt;head&gt;</code> part of my page.<br>
  So depending on the selected route, the meta description changes like:</p>
  
  <pre><code>&lt;meta name="description" content="**my description for this route**"/&gt;
  </code></pre>